19914422320

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{617693}}^1$

素因数の和:617750

約数の個数: 80

約数和(自身を含む): 51471205632

約数和(自身を除く): 31556783312

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 31, 40, 52, 62, 65, 80, 104, 124, 130, 155, 208, 248, 260, 310, 403, 496, 520, 620, 806, 1040, 1240, 1612, 2015, 2480, 3224, 4030, 6448, 8060, 16120, 32240, 617693, 1235386, 2470772, 3088465, 4941544, 6176930, 8030009, 9883088, 12353860, 16060018, 19148483, 24707720, 32120036, 38296966, 40150045, 49415440, 64240072, 76593932, 80300090, 95742415, 128480144, 153187864, 160600180, 191484830, 248930279, 306375728, 321200360, 382969660, 497860558, 642400720, 765939320, 995721116, 1244651395, 1531878640, 1991442232, 2489302790, 3982884464, 4978605580, 9957211160, 19914422320]

約数ペア:

[(1, 19914422320), (2, 9957211160), (4, 4978605580), (5, 3982884464), (8, 2489302790), (10, 1991442232), (13, 1531878640), (16, 1244651395), (20, 995721116), (26, 765939320), (31, 642400720), (40, 497860558), (52, 382969660), (62, 321200360), (65, 306375728), (80, 248930279), (104, 191484830), (124, 160600180), (130, 153187864), (155, 128480144), (208, 95742415), (248, 80300090), (260, 76593932), (310, 64240072), (403, 49415440), (496, 40150045), (520, 38296966), (620, 32120036), (806, 24707720), (1040, 19148483), (1240, 16060018), (1612, 12353860), (2015, 9883088), (2480, 8030009), (3224, 6176930), (4030, 4941544), (6448, 3088465), (8060, 2470772), (16120, 1235386), (32240, 617693)]