21696640

素因数分解:

$2^7\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{167}}^1$

素因数の和:222

約数の個数: 128

約数和(自身を含む): 61689600

約数和(自身を除く): 39992960

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 29, 32, 35, 40, 56, 58, 64, 70, 80, 112, 116, 128, 140, 145, 160, 167, 203, 224, 232, 280, 290, 320, 334, 406, 448, 464, 560, 580, 640, 668, 812, 835, 896, 928, 1015, 1120, 1160, 1169, 1336, 1624, 1670, 1856, 2030, 2240, 2320, 2338, 2672, 3248, 3340, 3712, 4060, 4480, 4640, 4676, 4843, 5344, 5845, 6496, 6680, 8120, 9280, 9352, 9686, 10688, 11690, 12992, 13360, 16240, 18560, 18704, 19372, 21376, 23380, 24215, 25984, 26720, 32480, 33901, 37408, 38744, 46760, 48430, 53440, 64960, 67802, 74816, 77488, 93520, 96860, 106880, 129920, 135604, 149632, 154976, 169505, 187040, 193720, 271208, 309952, 339010, 374080, 387440, 542416, 619904, 678020, 748160, 774880, 1084832, 1356040, 1549760, 2169664, 2712080, 3099520, 4339328, 5424160, 10848320, 21696640]

約数ペア:

[(1, 21696640), (2, 10848320), (4, 5424160), (5, 4339328), (7, 3099520), (8, 2712080), (10, 2169664), (14, 1549760), (16, 1356040), (20, 1084832), (28, 774880), (29, 748160), (32, 678020), (35, 619904), (40, 542416), (56, 387440), (58, 374080), (64, 339010), (70, 309952), (80, 271208), (112, 193720), (116, 187040), (128, 169505), (140, 154976), (145, 149632), (160, 135604), (167, 129920), (203, 106880), (224, 96860), (232, 93520), (280, 77488), (290, 74816), (320, 67802), (334, 64960), (406, 53440), (448, 48430), (464, 46760), (560, 38744), (580, 37408), (640, 33901), (668, 32480), (812, 26720), (835, 25984), (896, 24215), (928, 23380), (1015, 21376), (1120, 19372), (1160, 18704), (1169, 18560), (1336, 16240), (1624, 13360), (1670, 12992), (1856, 11690), (2030, 10688), (2240, 9686), (2320, 9352), (2338, 9280), (2672, 8120), (3248, 6680), (3340, 6496), (3712, 5845), (4060, 5344), (4480, 4843), (4640, 4676)]