21513100

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{73}}^1\times {\mathrm{421}}^1$

素因数の和:515

約数の個数: 72

約数和(自身を含む): 54211808

約数和(自身を除く): 32698708

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 50, 70, 73, 100, 140, 146, 175, 292, 350, 365, 421, 511, 700, 730, 842, 1022, 1460, 1684, 1825, 2044, 2105, 2555, 2947, 3650, 4210, 5110, 5894, 7300, 8420, 10220, 10525, 11788, 12775, 14735, 21050, 25550, 29470, 30733, 42100, 51100, 58940, 61466, 73675, 122932, 147350, 153665, 215131, 294700, 307330, 430262, 614660, 768325, 860524, 1075655, 1536650, 2151310, 3073300, 4302620, 5378275, 10756550, 21513100]

約数ペア:

[(1, 21513100), (2, 10756550), (4, 5378275), (5, 4302620), (7, 3073300), (10, 2151310), (14, 1536650), (20, 1075655), (25, 860524), (28, 768325), (35, 614660), (50, 430262), (70, 307330), (73, 294700), (100, 215131), (140, 153665), (146, 147350), (175, 122932), (292, 73675), (350, 61466), (365, 58940), (421, 51100), (511, 42100), (700, 30733), (730, 29470), (842, 25550), (1022, 21050), (1460, 14735), (1684, 12775), (1825, 11788), (2044, 10525), (2105, 10220), (2555, 8420), (2947, 7300), (3650, 5894), (4210, 5110)]