21486420

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{1511}}^1$

素因数の和:1605

約数の個数: 72

約数和(自身を含む): 66044160

約数和(自身を除く): 44557740

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 79, 90, 158, 180, 237, 316, 395, 474, 711, 790, 948, 1185, 1422, 1511, 1580, 2370, 2844, 3022, 3555, 4533, 4740, 6044, 7110, 7555, 9066, 13599, 14220, 15110, 18132, 22665, 27198, 30220, 45330, 54396, 67995, 90660, 119369, 135990, 238738, 271980, 358107, 477476, 596845, 716214, 1074321, 1193690, 1432428, 1790535, 2148642, 2387380, 3581070, 4297284, 5371605, 7162140, 10743210, 21486420]

約数ペア:

[(1, 21486420), (2, 10743210), (3, 7162140), (4, 5371605), (5, 4297284), (6, 3581070), (9, 2387380), (10, 2148642), (12, 1790535), (15, 1432428), (18, 1193690), (20, 1074321), (30, 716214), (36, 596845), (45, 477476), (60, 358107), (79, 271980), (90, 238738), (158, 135990), (180, 119369), (237, 90660), (316, 67995), (395, 54396), (474, 45330), (711, 30220), (790, 27198), (948, 22665), (1185, 18132), (1422, 15110), (1511, 14220), (1580, 13599), (2370, 9066), (2844, 7555), (3022, 7110), (3555, 6044), (4533, 4740)]