318721840

素因数分解:

$2^4\times 5^1\times {\mathrm{71}}^1\times {\mathrm{56113}}^1$

素因数の和:56197

約数の個数: 40

約数和(自身を含む): 751478688

約数和(自身を除く): 432756848

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 71, 80, 142, 284, 355, 568, 710, 1136, 1420, 2840, 5680, 56113, 112226, 224452, 280565, 448904, 561130, 897808, 1122260, 2244520, 3984023, 4489040, 7968046, 15936092, 19920115, 31872184, 39840230, 63744368, 79680460, 159360920, 318721840]

約数ペア:

[(1, 318721840), (2, 159360920), (4, 79680460), (5, 63744368), (8, 39840230), (10, 31872184), (16, 19920115), (20, 15936092), (40, 7968046), (71, 4489040), (80, 3984023), (142, 2244520), (284, 1122260), (355, 897808), (568, 561130), (710, 448904), (1136, 280565), (1420, 224452), (2840, 112226), (5680, 56113)]