161880320

素因数分解:

$2^8\times 5^1\times 7^2\times {\mathrm{29}}^1\times {\mathrm{89}}^1$

素因数の和:153

約数の個数: 216

約数和(自身を含む): 471857400

約数和(自身を除く): 309977080

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 29, 32, 35, 40, 49, 56, 58, 64, 70, 80, 89, 98, 112, 116, 128, 140, 145, 160, 178, 196, 203, 224, 232, 245, 256, 280, 290, 320, 356, 392, 406, 445, 448, 464, 490, 560, 580, 623, 640, 712, 784, 812, 890, 896, 928, 980, 1015, 1120, 1160, 1246, 1280, 1421, 1424, 1568, 1624, 1780, 1792, 1856, 1960, 2030, 2240, 2320, 2492, 2581, 2842, 2848, 3115, 3136, 3248, 3560, 3712, 3920, 4060, 4361, 4480, 4640, 4984, 5162, 5684, 5696, 6230, 6272, 6496, 7105, 7120, 7424, 7840, 8120, 8722, 8960, 9280, 9968, 10324, 11368, 11392, 12460, 12544, 12905, 12992, 14210, 14240, 15680, 16240, 17444, 18067, 18560, 19936, 20648, 21805, 22736, 22784, 24920, 25810, 25984, 28420, 28480, 31360, 32480, 34888, 36134, 37120, 39872, 41296, 43610, 45472, 49840, 51620, 51968, 56840, 56960, 62720, 64960, 69776, 72268, 79744, 82592, 87220, 90335, 90944, 99680, 103240, 113680, 113920, 126469, 129920, 139552, 144536, 159488, 165184, 174440, 180670, 181888, 199360, 206480, 227360, 252938, 259840, 279104, 289072, 330368, 348880, 361340, 363776, 398720, 412960, 454720, 505876, 558208, 578144, 632345, 660736, 697760, 722680, 797440, 825920, 909440, 1011752, 1116416, 1156288, 1264690, 1395520, 1445360, 1651840, 1818880, 2023504, 2312576, 2529380, 2791040, 2890720, 3303680, 4047008, 4625152, 5058760, 5582080, 5781440, 8094016, 10117520, 11562880, 16188032, 20235040, 23125760, 32376064, 40470080, 80940160, 161880320]

約数ペア:

[(1, 161880320), (2, 80940160), (4, 40470080), (5, 32376064), (7, 23125760), (8, 20235040), (10, 16188032), (14, 11562880), (16, 10117520), (20, 8094016), (28, 5781440), (29, 5582080), (32, 5058760), (35, 4625152), (40, 4047008), (49, 3303680), (56, 2890720), (58, 2791040), (64, 2529380), (70, 2312576), (80, 2023504), (89, 1818880), (98, 1651840), (112, 1445360), (116, 1395520), (128, 1264690), (140, 1156288), (145, 1116416), (160, 1011752), (178, 909440), (196, 825920), (203, 797440), (224, 722680), (232, 697760), (245, 660736), (256, 632345), (280, 578144), (290, 558208), (320, 505876), (356, 454720), (392, 412960), (406, 398720), (445, 363776), (448, 361340), (464, 348880), (490, 330368), (560, 289072), (580, 279104), (623, 259840), (640, 252938), (712, 227360), (784, 206480), (812, 199360), (890, 181888), (896, 180670), (928, 174440), (980, 165184), (1015, 159488), (1120, 144536), (1160, 139552), (1246, 129920), (1280, 126469), (1421, 113920), (1424, 113680), (1568, 103240), (1624, 99680), (1780, 90944), (1792, 90335), (1856, 87220), (1960, 82592), (2030, 79744), (2240, 72268), (2320, 69776), (2492, 64960), (2581, 62720), (2842, 56960), (2848, 56840), (3115, 51968), (3136, 51620), (3248, 49840), (3560, 45472), (3712, 43610), (3920, 41296), (4060, 39872), (4361, 37120), (4480, 36134), (4640, 34888), (4984, 32480), (5162, 31360), (5684, 28480), (5696, 28420), (6230, 25984), (6272, 25810), (6496, 24920), (7105, 22784), (7120, 22736), (7424, 21805), (7840, 20648), (8120, 19936), (8722, 18560), (8960, 18067), (9280, 17444), (9968, 16240), (10324, 15680), (11368, 14240), (11392, 14210), (12460, 12992), (12544, 12905)]