21228400

素因数分解:

$2^4\times 5^2\times {\mathrm{73}}^1\times {\mathrm{727}}^1$

素因数の和:818

約数の個数: 60

約数和(自身を含む): 51770992

約数和(自身を除く): 30542592

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 73, 80, 100, 146, 200, 292, 365, 400, 584, 727, 730, 1168, 1454, 1460, 1825, 2908, 2920, 3635, 3650, 5816, 5840, 7270, 7300, 11632, 14540, 14600, 18175, 29080, 29200, 36350, 53071, 58160, 72700, 106142, 145400, 212284, 265355, 290800, 424568, 530710, 849136, 1061420, 1326775, 2122840, 2653550, 4245680, 5307100, 10614200, 21228400]

約数ペア:

[(1, 21228400), (2, 10614200), (4, 5307100), (5, 4245680), (8, 2653550), (10, 2122840), (16, 1326775), (20, 1061420), (25, 849136), (40, 530710), (50, 424568), (73, 290800), (80, 265355), (100, 212284), (146, 145400), (200, 106142), (292, 72700), (365, 58160), (400, 53071), (584, 36350), (727, 29200), (730, 29080), (1168, 18175), (1454, 14600), (1460, 14540), (1825, 11632), (2908, 7300), (2920, 7270), (3635, 5840), (3650, 5816)]