80207920

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{233}}^1\times {\mathrm{331}}^1$

素因数の和:590

約数の個数: 80

約数和(自身を含む): 202299552

約数和(自身を除く): 122091632

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 233, 260, 331, 466, 520, 662, 932, 1040, 1165, 1324, 1655, 1864, 2330, 2648, 3029, 3310, 3728, 4303, 4660, 5296, 6058, 6620, 8606, 9320, 12116, 13240, 15145, 17212, 18640, 21515, 24232, 26480, 30290, 34424, 43030, 48464, 60580, 68848, 77123, 86060, 121160, 154246, 172120, 242320, 308492, 344240, 385615, 616984, 771230, 1002599, 1233968, 1542460, 2005198, 3084920, 4010396, 5012995, 6169840, 8020792, 10025990, 16041584, 20051980, 40103960, 80207920]

約数ペア:

[(1, 80207920), (2, 40103960), (4, 20051980), (5, 16041584), (8, 10025990), (10, 8020792), (13, 6169840), (16, 5012995), (20, 4010396), (26, 3084920), (40, 2005198), (52, 1542460), (65, 1233968), (80, 1002599), (104, 771230), (130, 616984), (208, 385615), (233, 344240), (260, 308492), (331, 242320), (466, 172120), (520, 154246), (662, 121160), (932, 86060), (1040, 77123), (1165, 68848), (1324, 60580), (1655, 48464), (1864, 43030), (2330, 34424), (2648, 30290), (3029, 26480), (3310, 24232), (3728, 21515), (4303, 18640), (4660, 17212), (5296, 15145), (6058, 13240), (6620, 12116), (8606, 9320)]