31078120

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{353}}^1$

素因数の和:466

約数の個数: 64

約数和(自身を含む): 73405440

約数和(自身を除く): 42327320

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 71, 124, 142, 155, 248, 284, 310, 353, 355, 568, 620, 706, 710, 1240, 1412, 1420, 1765, 2201, 2824, 2840, 3530, 4402, 7060, 8804, 10943, 11005, 14120, 17608, 21886, 22010, 25063, 43772, 44020, 50126, 54715, 87544, 88040, 100252, 109430, 125315, 200504, 218860, 250630, 437720, 501260, 776953, 1002520, 1553906, 3107812, 3884765, 6215624, 7769530, 15539060, 31078120]

約数ペア:

[(1, 31078120), (2, 15539060), (4, 7769530), (5, 6215624), (8, 3884765), (10, 3107812), (20, 1553906), (31, 1002520), (40, 776953), (62, 501260), (71, 437720), (124, 250630), (142, 218860), (155, 200504), (248, 125315), (284, 109430), (310, 100252), (353, 88040), (355, 87544), (568, 54715), (620, 50126), (706, 44020), (710, 43772), (1240, 25063), (1412, 22010), (1420, 21886), (1765, 17608), (2201, 14120), (2824, 11005), (2840, 10943), (3530, 8804), (4402, 7060)]