64245640

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{197}}^1\times {\mathrm{263}}^1$

素因数の和:502

約数の個数: 64

約数和(自身を含む): 150543360

約数和(自身を除く): 86297720

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 197, 248, 263, 310, 394, 526, 620, 788, 985, 1052, 1240, 1315, 1576, 1970, 2104, 2630, 3940, 5260, 6107, 7880, 8153, 10520, 12214, 16306, 24428, 30535, 32612, 40765, 48856, 51811, 61070, 65224, 81530, 103622, 122140, 163060, 207244, 244280, 259055, 326120, 414488, 518110, 1036220, 1606141, 2072440, 3212282, 6424564, 8030705, 12849128, 16061410, 32122820, 64245640]

約数ペア:

[(1, 64245640), (2, 32122820), (4, 16061410), (5, 12849128), (8, 8030705), (10, 6424564), (20, 3212282), (31, 2072440), (40, 1606141), (62, 1036220), (124, 518110), (155, 414488), (197, 326120), (248, 259055), (263, 244280), (310, 207244), (394, 163060), (526, 122140), (620, 103622), (788, 81530), (985, 65224), (1052, 61070), (1240, 51811), (1315, 48856), (1576, 40765), (1970, 32612), (2104, 30535), (2630, 24428), (3940, 16306), (5260, 12214), (6107, 10520), (7880, 8153)]