21398880

素因数分解:

$2^5\times 3^1\times 5^1\times {\mathrm{109}}^1\times {\mathrm{409}}^1$

素因数の和:536

約数の個数: 96

約数和(自身を含む): 68191200

約数和(自身を除く): 46792320

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 60, 80, 96, 109, 120, 160, 218, 240, 327, 409, 436, 480, 545, 654, 818, 872, 1090, 1227, 1308, 1635, 1636, 1744, 2045, 2180, 2454, 2616, 3270, 3272, 3488, 4090, 4360, 4908, 5232, 6135, 6540, 6544, 8180, 8720, 9816, 10464, 12270, 13080, 13088, 16360, 17440, 19632, 24540, 26160, 32720, 39264, 44581, 49080, 52320, 65440, 89162, 98160, 133743, 178324, 196320, 222905, 267486, 356648, 445810, 534972, 668715, 713296, 891620, 1069944, 1337430, 1426592, 1783240, 2139888, 2674860, 3566480, 4279776, 5349720, 7132960, 10699440, 21398880]

約数ペア:

[(1, 21398880), (2, 10699440), (3, 7132960), (4, 5349720), (5, 4279776), (6, 3566480), (8, 2674860), (10, 2139888), (12, 1783240), (15, 1426592), (16, 1337430), (20, 1069944), (24, 891620), (30, 713296), (32, 668715), (40, 534972), (48, 445810), (60, 356648), (80, 267486), (96, 222905), (109, 196320), (120, 178324), (160, 133743), (218, 98160), (240, 89162), (327, 65440), (409, 52320), (436, 49080), (480, 44581), (545, 39264), (654, 32720), (818, 26160), (872, 24540), (1090, 19632), (1227, 17440), (1308, 16360), (1635, 13088), (1636, 13080), (1744, 12270), (2045, 10464), (2180, 9816), (2454, 8720), (2616, 8180), (3270, 6544), (3272, 6540), (3488, 6135), (4090, 5232), (4360, 4908)]