21889680

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{223}}^1\times {\mathrm{409}}^1$

素因数の和:648

約数の個数: 80

約数和(自身を含む): 68328960

約数和(自身を除く): 46439280

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 223, 240, 409, 446, 669, 818, 892, 1115, 1227, 1338, 1636, 1784, 2045, 2230, 2454, 2676, 3272, 3345, 3568, 4090, 4460, 4908, 5352, 6135, 6544, 6690, 8180, 8920, 9816, 10704, 12270, 13380, 16360, 17840, 19632, 24540, 26760, 32720, 49080, 53520, 91207, 98160, 182414, 273621, 364828, 456035, 547242, 729656, 912070, 1094484, 1368105, 1459312, 1824140, 2188968, 2736210, 3648280, 4377936, 5472420, 7296560, 10944840, 21889680]

約数ペア:

[(1, 21889680), (2, 10944840), (3, 7296560), (4, 5472420), (5, 4377936), (6, 3648280), (8, 2736210), (10, 2188968), (12, 1824140), (15, 1459312), (16, 1368105), (20, 1094484), (24, 912070), (30, 729656), (40, 547242), (48, 456035), (60, 364828), (80, 273621), (120, 182414), (223, 98160), (240, 91207), (409, 53520), (446, 49080), (669, 32720), (818, 26760), (892, 24540), (1115, 19632), (1227, 17840), (1338, 16360), (1636, 13380), (1784, 12270), (2045, 10704), (2230, 9816), (2454, 8920), (2676, 8180), (3272, 6690), (3345, 6544), (3568, 6135), (4090, 5352), (4460, 4908)]