20124520

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^3\times {\mathrm{229}}^1$

素因数の和:279

約数の個数: 64

約数和(自身を含む): 49266000

約数和(自身を除く): 29141480

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 169, 229, 260, 338, 458, 520, 676, 845, 916, 1145, 1352, 1690, 1832, 2197, 2290, 2977, 3380, 4394, 4580, 5954, 6760, 8788, 9160, 10985, 11908, 14885, 17576, 21970, 23816, 29770, 38701, 43940, 59540, 77402, 87880, 119080, 154804, 193505, 309608, 387010, 503113, 774020, 1006226, 1548040, 2012452, 2515565, 4024904, 5031130, 10062260, 20124520]

約数ペア:

[(1, 20124520), (2, 10062260), (4, 5031130), (5, 4024904), (8, 2515565), (10, 2012452), (13, 1548040), (20, 1006226), (26, 774020), (40, 503113), (52, 387010), (65, 309608), (104, 193505), (130, 154804), (169, 119080), (229, 87880), (260, 77402), (338, 59540), (458, 43940), (520, 38701), (676, 29770), (845, 23816), (916, 21970), (1145, 17576), (1352, 14885), (1690, 11908), (1832, 10985), (2197, 9160), (2290, 8788), (2977, 6760), (3380, 5954), (4394, 4580)]