31580920

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{43}}^2\times {\mathrm{61}}^1$

素因数の和:165

約数の個数: 96

約数和(自身を含む): 84503520

約数和(自身を除く): 52922600

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 43, 56, 61, 70, 86, 122, 140, 172, 215, 244, 280, 301, 305, 344, 427, 430, 488, 602, 610, 854, 860, 1204, 1220, 1505, 1708, 1720, 1849, 2135, 2408, 2440, 2623, 3010, 3416, 3698, 4270, 5246, 6020, 7396, 8540, 9245, 10492, 12040, 12943, 13115, 14792, 17080, 18361, 18490, 20984, 25886, 26230, 36722, 36980, 51772, 52460, 64715, 73444, 73960, 91805, 103544, 104920, 112789, 129430, 146888, 183610, 225578, 258860, 367220, 451156, 517720, 563945, 734440, 789523, 902312, 1127890, 1579046, 2255780, 3158092, 3947615, 4511560, 6316184, 7895230, 15790460, 31580920]

約数ペア:

[(1, 31580920), (2, 15790460), (4, 7895230), (5, 6316184), (7, 4511560), (8, 3947615), (10, 3158092), (14, 2255780), (20, 1579046), (28, 1127890), (35, 902312), (40, 789523), (43, 734440), (56, 563945), (61, 517720), (70, 451156), (86, 367220), (122, 258860), (140, 225578), (172, 183610), (215, 146888), (244, 129430), (280, 112789), (301, 104920), (305, 103544), (344, 91805), (427, 73960), (430, 73444), (488, 64715), (602, 52460), (610, 51772), (854, 36980), (860, 36722), (1204, 26230), (1220, 25886), (1505, 20984), (1708, 18490), (1720, 18361), (1849, 17080), (2135, 14792), (2408, 13115), (2440, 12943), (2623, 12040), (3010, 10492), (3416, 9245), (3698, 8540), (4270, 7396), (5246, 6020)]