21287812

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{233}}^1\times {\mathrm{251}}^1$

素因数の和:508

約数の個数: 48

約数和(自身を含む): 46230912

約数和(自身を除く): 24943100

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 52, 91, 182, 233, 251, 364, 466, 502, 932, 1004, 1631, 1757, 3029, 3262, 3263, 3514, 6058, 6524, 6526, 7028, 12116, 13052, 21203, 22841, 42406, 45682, 58483, 84812, 91364, 116966, 233932, 409381, 760279, 818762, 1520558, 1637524, 3041116, 5321953, 10643906, 21287812]

約数ペア:

[(1, 21287812), (2, 10643906), (4, 5321953), (7, 3041116), (13, 1637524), (14, 1520558), (26, 818762), (28, 760279), (52, 409381), (91, 233932), (182, 116966), (233, 91364), (251, 84812), (364, 58483), (466, 45682), (502, 42406), (932, 22841), (1004, 21203), (1631, 13052), (1757, 12116), (3029, 7028), (3262, 6526), (3263, 6524), (3514, 6058)]