312200020

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^2\times {\mathrm{3931}}^1$

素因数の和:3989

約数の個数: 72

約数和(自身を含む): 755038368

約数和(自身を除く): 442838348

約数列:

[1, 2, 4, 5, 10, 11, 19, 20, 22, 38, 44, 55, 76, 95, 110, 190, 209, 220, 361, 380, 418, 722, 836, 1045, 1444, 1805, 2090, 3610, 3931, 3971, 4180, 7220, 7862, 7942, 15724, 15884, 19655, 19855, 39310, 39710, 43241, 74689, 78620, 79420, 86482, 149378, 172964, 216205, 298756, 373445, 432410, 746890, 821579, 864820, 1419091, 1493780, 1643158, 2838182, 3286316, 4107895, 5676364, 7095455, 8215790, 14190910, 15610001, 16431580, 28381820, 31220002, 62440004, 78050005, 156100010, 312200020]

約数ペア:

[(1, 312200020), (2, 156100010), (4, 78050005), (5, 62440004), (10, 31220002), (11, 28381820), (19, 16431580), (20, 15610001), (22, 14190910), (38, 8215790), (44, 7095455), (55, 5676364), (76, 4107895), (95, 3286316), (110, 2838182), (190, 1643158), (209, 1493780), (220, 1419091), (361, 864820), (380, 821579), (418, 746890), (722, 432410), (836, 373445), (1045, 298756), (1444, 216205), (1805, 172964), (2090, 149378), (3610, 86482), (3931, 79420), (3971, 78620), (4180, 74689), (7220, 43241), (7862, 39710), (7942, 39310), (15724, 19855), (15884, 19655)]