21118950

素因数分解:

$2^1\times 3^2\times 5^2\times {\mathrm{71}}^1\times {\mathrm{661}}^1$

素因数の和:750

約数の個数: 72

約数和(自身を含む): 57625776

約数和(自身を除く): 36506826

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 25, 30, 45, 50, 71, 75, 90, 142, 150, 213, 225, 355, 426, 450, 639, 661, 710, 1065, 1278, 1322, 1775, 1983, 2130, 3195, 3305, 3550, 3966, 5325, 5949, 6390, 6610, 9915, 10650, 11898, 15975, 16525, 19830, 29745, 31950, 33050, 46931, 49575, 59490, 93862, 99150, 140793, 148725, 234655, 281586, 297450, 422379, 469310, 703965, 844758, 1173275, 1407930, 2111895, 2346550, 3519825, 4223790, 7039650, 10559475, 21118950]

約数ペア:

[(1, 21118950), (2, 10559475), (3, 7039650), (5, 4223790), (6, 3519825), (9, 2346550), (10, 2111895), (15, 1407930), (18, 1173275), (25, 844758), (30, 703965), (45, 469310), (50, 422379), (71, 297450), (75, 281586), (90, 234655), (142, 148725), (150, 140793), (213, 99150), (225, 93862), (355, 59490), (426, 49575), (450, 46931), (639, 33050), (661, 31950), (710, 29745), (1065, 19830), (1278, 16525), (1322, 15975), (1775, 11898), (1983, 10650), (2130, 9915), (3195, 6610), (3305, 6390), (3550, 5949), (3966, 5325)]