12896440

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{239}}^1$

素因数の和:340

約数の個数: 64

約数和(自身を含む): 31104000

約数和(自身を除く): 18207560

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 71, 76, 95, 142, 152, 190, 239, 284, 355, 380, 478, 568, 710, 760, 956, 1195, 1349, 1420, 1912, 2390, 2698, 2840, 4541, 4780, 5396, 6745, 9082, 9560, 10792, 13490, 16969, 18164, 22705, 26980, 33938, 36328, 45410, 53960, 67876, 84845, 90820, 135752, 169690, 181640, 322411, 339380, 644822, 678760, 1289644, 1612055, 2579288, 3224110, 6448220, 12896440]

約数ペア:

[(1, 12896440), (2, 6448220), (4, 3224110), (5, 2579288), (8, 1612055), (10, 1289644), (19, 678760), (20, 644822), (38, 339380), (40, 322411), (71, 181640), (76, 169690), (95, 135752), (142, 90820), (152, 84845), (190, 67876), (239, 53960), (284, 45410), (355, 36328), (380, 33938), (478, 26980), (568, 22705), (710, 18164), (760, 16969), (956, 13490), (1195, 10792), (1349, 9560), (1420, 9082), (1912, 6745), (2390, 5396), (2698, 4780), (2840, 4541)]