251013820

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{89}}^1\times {\mathrm{4549}}^1$

素因数の和:4678

約数の個数: 48

約数和(自身を含む): 550368000

約数和(自身を除く): 299354180

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 89, 124, 155, 178, 310, 356, 445, 620, 890, 1780, 2759, 4549, 5518, 9098, 11036, 13795, 18196, 22745, 27590, 45490, 55180, 90980, 141019, 282038, 404861, 564076, 705095, 809722, 1410190, 1619444, 2024305, 2820380, 4048610, 8097220, 12550691, 25101382, 50202764, 62753455, 125506910, 251013820]

約数ペア:

[(1, 251013820), (2, 125506910), (4, 62753455), (5, 50202764), (10, 25101382), (20, 12550691), (31, 8097220), (62, 4048610), (89, 2820380), (124, 2024305), (155, 1619444), (178, 1410190), (310, 809722), (356, 705095), (445, 564076), (620, 404861), (890, 282038), (1780, 141019), (2759, 90980), (4549, 55180), (5518, 45490), (9098, 27590), (11036, 22745), (13795, 18196)]