28081280

素因数分解:

$2^7\times 5^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{89}}^1$

素因数の和:154

約数の個数: 128

約数和(自身を含む): 74358000

約数和(自身を除く): 46276720

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 29, 32, 34, 40, 58, 64, 68, 80, 85, 89, 116, 128, 136, 145, 160, 170, 178, 232, 272, 290, 320, 340, 356, 445, 464, 493, 544, 580, 640, 680, 712, 890, 928, 986, 1088, 1160, 1360, 1424, 1513, 1780, 1856, 1972, 2176, 2320, 2465, 2581, 2720, 2848, 3026, 3560, 3712, 3944, 4640, 4930, 5162, 5440, 5696, 6052, 7120, 7565, 7888, 9280, 9860, 10324, 10880, 11392, 12104, 12905, 14240, 15130, 15776, 18560, 19720, 20648, 24208, 25810, 28480, 30260, 31552, 39440, 41296, 43877, 48416, 51620, 56960, 60520, 63104, 78880, 82592, 87754, 96832, 103240, 121040, 157760, 165184, 175508, 193664, 206480, 219385, 242080, 315520, 330368, 351016, 412960, 438770, 484160, 702032, 825920, 877540, 968320, 1404064, 1651840, 1755080, 2808128, 3510160, 5616256, 7020320, 14040640, 28081280]

約数ペア:

[(1, 28081280), (2, 14040640), (4, 7020320), (5, 5616256), (8, 3510160), (10, 2808128), (16, 1755080), (17, 1651840), (20, 1404064), (29, 968320), (32, 877540), (34, 825920), (40, 702032), (58, 484160), (64, 438770), (68, 412960), (80, 351016), (85, 330368), (89, 315520), (116, 242080), (128, 219385), (136, 206480), (145, 193664), (160, 175508), (170, 165184), (178, 157760), (232, 121040), (272, 103240), (290, 96832), (320, 87754), (340, 82592), (356, 78880), (445, 63104), (464, 60520), (493, 56960), (544, 51620), (580, 48416), (640, 43877), (680, 41296), (712, 39440), (890, 31552), (928, 30260), (986, 28480), (1088, 25810), (1160, 24208), (1360, 20648), (1424, 19720), (1513, 18560), (1780, 15776), (1856, 15130), (1972, 14240), (2176, 12905), (2320, 12104), (2465, 11392), (2581, 10880), (2720, 10324), (2848, 9860), (3026, 9280), (3560, 7888), (3712, 7565), (3944, 7120), (4640, 6052), (4930, 5696), (5162, 5440)]