28025240

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{97}}^1\times {\mathrm{233}}^1$

素因数の和:372

約数の個数: 64

約数和(自身を含む): 66044160

約数和(自身を除く): 38018920

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 97, 124, 155, 194, 233, 248, 310, 388, 466, 485, 620, 776, 932, 970, 1165, 1240, 1864, 1940, 2330, 3007, 3880, 4660, 6014, 7223, 9320, 12028, 14446, 15035, 22601, 24056, 28892, 30070, 36115, 45202, 57784, 60140, 72230, 90404, 113005, 120280, 144460, 180808, 226010, 288920, 452020, 700631, 904040, 1401262, 2802524, 3503155, 5605048, 7006310, 14012620, 28025240]

約数ペア:

[(1, 28025240), (2, 14012620), (4, 7006310), (5, 5605048), (8, 3503155), (10, 2802524), (20, 1401262), (31, 904040), (40, 700631), (62, 452020), (97, 288920), (124, 226010), (155, 180808), (194, 144460), (233, 120280), (248, 113005), (310, 90404), (388, 72230), (466, 60140), (485, 57784), (620, 45202), (776, 36115), (932, 30070), (970, 28892), (1165, 24056), (1240, 22601), (1864, 15035), (1940, 14446), (2330, 12028), (3007, 9320), (3880, 7223), (4660, 6014)]