21813460

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{151}}^1\times {\mathrm{233}}^1$

素因数の和:424

約数の個数: 48

約数和(自身を含む): 47803392

約数和(自身を除く): 25989932

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 151, 155, 233, 302, 310, 466, 604, 620, 755, 932, 1165, 1510, 2330, 3020, 4660, 4681, 7223, 9362, 14446, 18724, 23405, 28892, 35183, 36115, 46810, 70366, 72230, 93620, 140732, 144460, 175915, 351830, 703660, 1090673, 2181346, 4362692, 5453365, 10906730, 21813460]

約数ペア:

[(1, 21813460), (2, 10906730), (4, 5453365), (5, 4362692), (10, 2181346), (20, 1090673), (31, 703660), (62, 351830), (124, 175915), (151, 144460), (155, 140732), (233, 93620), (302, 72230), (310, 70366), (466, 46810), (604, 36115), (620, 35183), (755, 28892), (932, 23405), (1165, 18724), (1510, 14446), (2330, 9362), (3020, 7223), (4660, 4681)]