31808080

素因数分解:

$2^4\times 5^1\times {\mathrm{23}}^1\times {\mathrm{59}}^1\times {\mathrm{293}}^1$

素因数の和:388

約数の個数: 80

約数和(自身を含む): 78744960

約数和(自身を除く): 46936880

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 40, 46, 59, 80, 92, 115, 118, 184, 230, 236, 293, 295, 368, 460, 472, 586, 590, 920, 944, 1172, 1180, 1357, 1465, 1840, 2344, 2360, 2714, 2930, 4688, 4720, 5428, 5860, 6739, 6785, 10856, 11720, 13478, 13570, 17287, 21712, 23440, 26956, 27140, 33695, 34574, 53912, 54280, 67390, 69148, 86435, 107824, 108560, 134780, 138296, 172870, 269560, 276592, 345740, 397601, 539120, 691480, 795202, 1382960, 1590404, 1988005, 3180808, 3976010, 6361616, 7952020, 15904040, 31808080]

約数ペア:

[(1, 31808080), (2, 15904040), (4, 7952020), (5, 6361616), (8, 3976010), (10, 3180808), (16, 1988005), (20, 1590404), (23, 1382960), (40, 795202), (46, 691480), (59, 539120), (80, 397601), (92, 345740), (115, 276592), (118, 269560), (184, 172870), (230, 138296), (236, 134780), (293, 108560), (295, 107824), (368, 86435), (460, 69148), (472, 67390), (586, 54280), (590, 53912), (920, 34574), (944, 33695), (1172, 27140), (1180, 26956), (1357, 23440), (1465, 21712), (1840, 17287), (2344, 13570), (2360, 13478), (2714, 11720), (2930, 10856), (4688, 6785), (4720, 6739), (5428, 5860)]