320012620

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{179}}^1\times {\mathrm{1259}}^1$

素因数の和:1518

約数の個数: 48

約数和(自身を含む): 685843200

約数和(自身を除く): 365830580

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 179, 284, 355, 358, 710, 716, 895, 1259, 1420, 1790, 2518, 3580, 5036, 6295, 12590, 12709, 25180, 25418, 50836, 63545, 89389, 127090, 178778, 225361, 254180, 357556, 446945, 450722, 893890, 901444, 1126805, 1787780, 2253610, 4507220, 16000631, 32001262, 64002524, 80003155, 160006310, 320012620]

約数ペア:

[(1, 320012620), (2, 160006310), (4, 80003155), (5, 64002524), (10, 32001262), (20, 16000631), (71, 4507220), (142, 2253610), (179, 1787780), (284, 1126805), (355, 901444), (358, 893890), (710, 450722), (716, 446945), (895, 357556), (1259, 254180), (1420, 225361), (1790, 178778), (2518, 127090), (3580, 89389), (5036, 63545), (6295, 50836), (12590, 25418), (12709, 25180)]