18243940

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{6379}}^1$

素因数の和:6412

約数の個数: 48

約数和(自身を含む): 45017280

約数和(自身を除く): 26773340

約数列:

[1, 2, 4, 5, 10, 11, 13, 20, 22, 26, 44, 52, 55, 65, 110, 130, 143, 220, 260, 286, 572, 715, 1430, 2860, 6379, 12758, 25516, 31895, 63790, 70169, 82927, 127580, 140338, 165854, 280676, 331708, 350845, 414635, 701690, 829270, 912197, 1403380, 1658540, 1824394, 3648788, 4560985, 9121970, 18243940]

約数ペア:

[(1, 18243940), (2, 9121970), (4, 4560985), (5, 3648788), (10, 1824394), (11, 1658540), (13, 1403380), (20, 912197), (22, 829270), (26, 701690), (44, 414635), (52, 350845), (55, 331708), (65, 280676), (110, 165854), (130, 140338), (143, 127580), (220, 82927), (260, 70169), (286, 63790), (572, 31895), (715, 25516), (1430, 12758), (2860, 6379)]