2021619920

素因数分解:

$2^4\times 5^1\times {\mathrm{71}}^1\times {\mathrm{157}}^1\times {\mathrm{2267}}^1$

素因数の和:2508

約数の個数: 80

約数和(自身を含む): 4798942848

約数和(自身を除く): 2777322928

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 71, 80, 142, 157, 284, 314, 355, 568, 628, 710, 785, 1136, 1256, 1420, 1570, 2267, 2512, 2840, 3140, 4534, 5680, 6280, 9068, 11147, 11335, 12560, 18136, 22294, 22670, 36272, 44588, 45340, 55735, 89176, 90680, 111470, 160957, 178352, 181360, 222940, 321914, 355919, 445880, 643828, 711838, 804785, 891760, 1287656, 1423676, 1609570, 1779595, 2575312, 2847352, 3219140, 3559190, 5694704, 6438280, 7118380, 12876560, 14236760, 25270249, 28473520, 50540498, 101080996, 126351245, 202161992, 252702490, 404323984, 505404980, 1010809960, 2021619920]

約数ペア:

[(1, 2021619920), (2, 1010809960), (4, 505404980), (5, 404323984), (8, 252702490), (10, 202161992), (16, 126351245), (20, 101080996), (40, 50540498), (71, 28473520), (80, 25270249), (142, 14236760), (157, 12876560), (284, 7118380), (314, 6438280), (355, 5694704), (568, 3559190), (628, 3219140), (710, 2847352), (785, 2575312), (1136, 1779595), (1256, 1609570), (1420, 1423676), (1570, 1287656), (2267, 891760), (2512, 804785), (2840, 711838), (3140, 643828), (4534, 445880), (5680, 355919), (6280, 321914), (9068, 222940), (11147, 181360), (11335, 178352), (12560, 160957), (18136, 111470), (22294, 90680), (22670, 89176), (36272, 55735), (44588, 45340)]