21888020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{233}}^1$

素因数の和:321

約数の個数: 96

約数和(自身を含む): 58496256

約数和(自身を除く): 36608236

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 61, 70, 77, 110, 122, 140, 154, 220, 233, 244, 305, 308, 385, 427, 466, 610, 671, 770, 854, 932, 1165, 1220, 1342, 1540, 1631, 1708, 2135, 2330, 2563, 2684, 3262, 3355, 4270, 4660, 4697, 5126, 6524, 6710, 8155, 8540, 9394, 10252, 12815, 13420, 14213, 16310, 17941, 18788, 23485, 25630, 28426, 32620, 35882, 46970, 51260, 56852, 71065, 71764, 89705, 93940, 99491, 142130, 156343, 179410, 198982, 284260, 312686, 358820, 397964, 497455, 625372, 781715, 994910, 1094401, 1563430, 1989820, 2188802, 3126860, 4377604, 5472005, 10944010, 21888020]

約数ペア:

[(1, 21888020), (2, 10944010), (4, 5472005), (5, 4377604), (7, 3126860), (10, 2188802), (11, 1989820), (14, 1563430), (20, 1094401), (22, 994910), (28, 781715), (35, 625372), (44, 497455), (55, 397964), (61, 358820), (70, 312686), (77, 284260), (110, 198982), (122, 179410), (140, 156343), (154, 142130), (220, 99491), (233, 93940), (244, 89705), (305, 71764), (308, 71065), (385, 56852), (427, 51260), (466, 46970), (610, 35882), (671, 32620), (770, 28426), (854, 25630), (932, 23485), (1165, 18788), (1220, 17941), (1342, 16310), (1540, 14213), (1631, 13420), (1708, 12815), (2135, 10252), (2330, 9394), (2563, 8540), (2684, 8155), (3262, 6710), (3355, 6524), (4270, 5126), (4660, 4697)]