256890800

素因数分解:

$2^4\times 5^2\times {\mathrm{31}}^1\times {\mathrm{20717}}^1$

素因数の和:20766

約数の個数: 60

約数和(自身を含む): 637119936

約数和(自身を除く): 380229136

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 31, 40, 50, 62, 80, 100, 124, 155, 200, 248, 310, 400, 496, 620, 775, 1240, 1550, 2480, 3100, 6200, 12400, 20717, 41434, 82868, 103585, 165736, 207170, 331472, 414340, 517925, 642227, 828680, 1035850, 1284454, 1657360, 2071700, 2568908, 3211135, 4143400, 5137816, 6422270, 8286800, 10275632, 12844540, 16055675, 25689080, 32111350, 51378160, 64222700, 128445400, 256890800]

約数ペア:

[(1, 256890800), (2, 128445400), (4, 64222700), (5, 51378160), (8, 32111350), (10, 25689080), (16, 16055675), (20, 12844540), (25, 10275632), (31, 8286800), (40, 6422270), (50, 5137816), (62, 4143400), (80, 3211135), (100, 2568908), (124, 2071700), (155, 1657360), (200, 1284454), (248, 1035850), (310, 828680), (400, 642227), (496, 517925), (620, 414340), (775, 331472), (1240, 207170), (1550, 165736), (2480, 103585), (3100, 82868), (6200, 41434), (12400, 20717)]