21821363980

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{1785709}}^1$

素因数の和:1785778

約数の個数: 48

約数和(自身を含む): 50399879040

約数和(自身を除く): 28578515060

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 47, 52, 65, 94, 130, 188, 235, 260, 470, 611, 940, 1222, 2444, 3055, 6110, 12220, 1785709, 3571418, 7142836, 8928545, 17857090, 23214217, 35714180, 46428434, 83928323, 92856868, 116071085, 167856646, 232142170, 335713292, 419641615, 464284340, 839283230, 1091068199, 1678566460, 2182136398, 4364272796, 5455340995, 10910681990, 21821363980]

約数ペア:

[(1, 21821363980), (2, 10910681990), (4, 5455340995), (5, 4364272796), (10, 2182136398), (13, 1678566460), (20, 1091068199), (26, 839283230), (47, 464284340), (52, 419641615), (65, 335713292), (94, 232142170), (130, 167856646), (188, 116071085), (235, 92856868), (260, 83928323), (470, 46428434), (611, 35714180), (940, 23214217), (1222, 17857090), (2444, 8928545), (3055, 7142836), (6110, 3571418), (12220, 1785709)]