21457890

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{7691}}^1$

素因数の和:7735

約数の個数: 48

約数和(自身を含む): 57597696

約数和(自身を除く): 36139806

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 31, 45, 62, 90, 93, 155, 186, 279, 310, 465, 558, 930, 1395, 2790, 7691, 15382, 23073, 38455, 46146, 69219, 76910, 115365, 138438, 230730, 238421, 346095, 476842, 692190, 715263, 1192105, 1430526, 2145789, 2384210, 3576315, 4291578, 7152630, 10728945, 21457890]

約数ペア:

[(1, 21457890), (2, 10728945), (3, 7152630), (5, 4291578), (6, 3576315), (9, 2384210), (10, 2145789), (15, 1430526), (18, 1192105), (30, 715263), (31, 692190), (45, 476842), (62, 346095), (90, 238421), (93, 230730), (155, 138438), (186, 115365), (279, 76910), (310, 69219), (465, 46146), (558, 38455), (930, 23073), (1395, 15382), (2790, 7691)]