21456200

素因数分解:

$2^3\times 5^2\times {\mathrm{71}}^1\times {\mathrm{1511}}^1$

素因数の和:1598

約数の個数: 48

約数和(自身を含む): 50621760

約数和(自身を除く): 29165560

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 71, 100, 142, 200, 284, 355, 568, 710, 1420, 1511, 1775, 2840, 3022, 3550, 6044, 7100, 7555, 12088, 14200, 15110, 30220, 37775, 60440, 75550, 107281, 151100, 214562, 302200, 429124, 536405, 858248, 1072810, 2145620, 2682025, 4291240, 5364050, 10728100, 21456200]

約数ペア:

[(1, 21456200), (2, 10728100), (4, 5364050), (5, 4291240), (8, 2682025), (10, 2145620), (20, 1072810), (25, 858248), (40, 536405), (50, 429124), (71, 302200), (100, 214562), (142, 151100), (200, 107281), (284, 75550), (355, 60440), (568, 37775), (710, 30220), (1420, 15110), (1511, 14200), (1775, 12088), (2840, 7555), (3022, 7100), (3550, 6044)]