13117960

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{149}}^1$

素因数の和:262

約数の個数: 64

約数和(自身を含む): 31104000

約数和(自身を除く): 17986040

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 71, 124, 142, 149, 155, 248, 284, 298, 310, 355, 568, 596, 620, 710, 745, 1192, 1240, 1420, 1490, 2201, 2840, 2980, 4402, 4619, 5960, 8804, 9238, 10579, 11005, 17608, 18476, 21158, 22010, 23095, 36952, 42316, 44020, 46190, 52895, 84632, 88040, 92380, 105790, 184760, 211580, 327949, 423160, 655898, 1311796, 1639745, 2623592, 3279490, 6558980, 13117960]

約数ペア:

[(1, 13117960), (2, 6558980), (4, 3279490), (5, 2623592), (8, 1639745), (10, 1311796), (20, 655898), (31, 423160), (40, 327949), (62, 211580), (71, 184760), (124, 105790), (142, 92380), (149, 88040), (155, 84632), (248, 52895), (284, 46190), (298, 44020), (310, 42316), (355, 36952), (568, 23095), (596, 22010), (620, 21158), (710, 18476), (745, 17608), (1192, 11005), (1240, 10579), (1420, 9238), (1490, 8804), (2201, 5960), (2840, 4619), (2980, 4402)]