21478590

素因数分解:

$2^1\times 3^2\times 5^1\times 7^1\times {\mathrm{103}}^1\times {\mathrm{331}}^1$

素因数の和:454

約数の個数: 96

約数和(自身を含む): 64636416

約数和(自身を除く): 43157826

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 30, 35, 42, 45, 63, 70, 90, 103, 105, 126, 206, 210, 309, 315, 331, 515, 618, 630, 662, 721, 927, 993, 1030, 1442, 1545, 1655, 1854, 1986, 2163, 2317, 2979, 3090, 3310, 3605, 4326, 4634, 4635, 4965, 5958, 6489, 6951, 7210, 9270, 9930, 10815, 11585, 12978, 13902, 14895, 20853, 21630, 23170, 29790, 32445, 34093, 34755, 41706, 64890, 68186, 69510, 102279, 104265, 170465, 204558, 208530, 238651, 306837, 340930, 477302, 511395, 613674, 715953, 1022790, 1193255, 1431906, 1534185, 2147859, 2386510, 3068370, 3579765, 4295718, 7159530, 10739295, 21478590]

約数ペア:

[(1, 21478590), (2, 10739295), (3, 7159530), (5, 4295718), (6, 3579765), (7, 3068370), (9, 2386510), (10, 2147859), (14, 1534185), (15, 1431906), (18, 1193255), (21, 1022790), (30, 715953), (35, 613674), (42, 511395), (45, 477302), (63, 340930), (70, 306837), (90, 238651), (103, 208530), (105, 204558), (126, 170465), (206, 104265), (210, 102279), (309, 69510), (315, 68186), (331, 64890), (515, 41706), (618, 34755), (630, 34093), (662, 32445), (721, 29790), (927, 23170), (993, 21630), (1030, 20853), (1442, 14895), (1545, 13902), (1655, 12978), (1854, 11585), (1986, 10815), (2163, 9930), (2317, 9270), (2979, 7210), (3090, 6951), (3310, 6489), (3605, 5958), (4326, 4965), (4634, 4635)]