21386940840

素因数分解:

$2^3\times 3^3\times 5^1\times {\mathrm{19802723}}^1$

素因数の和:19802743

約数の個数: 64

約数和(自身を含む): 71289806400

約数和(自身を除く): 49902865560

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 27, 30, 36, 40, 45, 54, 60, 72, 90, 108, 120, 135, 180, 216, 270, 360, 540, 1080, 19802723, 39605446, 59408169, 79210892, 99013615, 118816338, 158421784, 178224507, 198027230, 237632676, 297040845, 356449014, 396054460, 475265352, 534673521, 594081690, 712898028, 792108920, 891122535, 1069347042, 1188163380, 1425796056, 1782245070, 2138694084, 2376326760, 2673367605, 3564490140, 4277388168, 5346735210, 7128980280, 10693470420, 21386940840]

約数ペア:

[(1, 21386940840), (2, 10693470420), (3, 7128980280), (4, 5346735210), (5, 4277388168), (6, 3564490140), (8, 2673367605), (9, 2376326760), (10, 2138694084), (12, 1782245070), (15, 1425796056), (18, 1188163380), (20, 1069347042), (24, 891122535), (27, 792108920), (30, 712898028), (36, 594081690), (40, 534673521), (45, 475265352), (54, 396054460), (60, 356449014), (72, 297040845), (90, 237632676), (108, 198027230), (120, 178224507), (135, 158421784), (180, 118816338), (216, 99013615), (270, 79210892), (360, 59408169), (540, 39605446), (1080, 19802723)]