28164955

素因数分解:

$5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{239}}^1$

素因数の和:308

約数の個数: 48

約数和(自身を含む): 43666560

約数和(自身を除く): 15501605

約数列:

[1, 5, 7, 13, 35, 37, 49, 65, 91, 185, 239, 245, 259, 455, 481, 637, 1195, 1295, 1673, 1813, 2405, 3107, 3185, 3367, 8365, 8843, 9065, 11711, 15535, 16835, 21749, 23569, 44215, 58555, 61901, 108745, 114959, 117845, 152243, 309505, 433307, 574795, 761215, 804713, 2166535, 4023565, 5632991, 28164955]

約数ペア:

[(1, 28164955), (5, 5632991), (7, 4023565), (13, 2166535), (35, 804713), (37, 761215), (49, 574795), (65, 433307), (91, 309505), (185, 152243), (239, 117845), (245, 114959), (259, 108745), (455, 61901), (481, 58555), (637, 44215), (1195, 23569), (1295, 21749), (1673, 16835), (1813, 15535), (2405, 11711), (3107, 9065), (3185, 8843), (3367, 8365)]