20825800

素因数分解:

$2^3\times 5^2\times {\mathrm{31}}^1\times {\mathrm{3359}}^1$

素因数の和:3406

約数の個数: 48

約数和(自身を含む): 49996800

約数和(自身を除く): 29171000

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 31, 40, 50, 62, 100, 124, 155, 200, 248, 310, 620, 775, 1240, 1550, 3100, 3359, 6200, 6718, 13436, 16795, 26872, 33590, 67180, 83975, 104129, 134360, 167950, 208258, 335900, 416516, 520645, 671800, 833032, 1041290, 2082580, 2603225, 4165160, 5206450, 10412900, 20825800]

約数ペア:

[(1, 20825800), (2, 10412900), (4, 5206450), (5, 4165160), (8, 2603225), (10, 2082580), (20, 1041290), (25, 833032), (31, 671800), (40, 520645), (50, 416516), (62, 335900), (100, 208258), (124, 167950), (155, 134360), (200, 104129), (248, 83975), (310, 67180), (620, 33590), (775, 26872), (1240, 16795), (1550, 13436), (3100, 6718), (3359, 6200)]