20995000020

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{73}}^1\times {\mathrm{1597793}}^1$

素因数の和:1597881

約数の個数: 72

約数和(自身を含む): 64557268776

約数和(自身を除く): 43562268756

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 73, 90, 146, 180, 219, 292, 365, 438, 657, 730, 876, 1095, 1314, 1460, 2190, 2628, 3285, 4380, 6570, 13140, 1597793, 3195586, 4793379, 6391172, 7988965, 9586758, 14380137, 15977930, 19173516, 23966895, 28760274, 31955860, 47933790, 57520548, 71900685, 95867580, 116638889, 143801370, 233277778, 287602740, 349916667, 466555556, 583194445, 699833334, 1049750001, 1166388890, 1399666668, 1749583335, 2099500002, 2332777780, 3499166670, 4199000004, 5248750005, 6998333340, 10497500010, 20995000020]

約数ペア:

[(1, 20995000020), (2, 10497500010), (3, 6998333340), (4, 5248750005), (5, 4199000004), (6, 3499166670), (9, 2332777780), (10, 2099500002), (12, 1749583335), (15, 1399666668), (18, 1166388890), (20, 1049750001), (30, 699833334), (36, 583194445), (45, 466555556), (60, 349916667), (73, 287602740), (90, 233277778), (146, 143801370), (180, 116638889), (219, 95867580), (292, 71900685), (365, 57520548), (438, 47933790), (657, 31955860), (730, 28760274), (876, 23966895), (1095, 19173516), (1314, 15977930), (1460, 14380137), (2190, 9586758), (2628, 7988965), (3285, 6391172), (4380, 4793379), (6570, 3195586), (13140, 1597793)]