20118751592

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{1721}}^1\times {\mathrm{1999}}^1$

素因数の和:3786

約数の個数: 64

約数和(自身を含む): 40914720000

約数和(自身を除く): 20795968408

約数列:

[1, 2, 4, 8, 17, 34, 43, 68, 86, 136, 172, 344, 731, 1462, 1721, 1999, 2924, 3442, 3998, 5848, 6884, 7996, 13768, 15992, 29257, 33983, 58514, 67966, 74003, 85957, 117028, 135932, 148006, 171914, 234056, 271864, 296012, 343828, 592024, 687656, 1258051, 1461269, 2516102, 2922538, 3440279, 5032204, 5845076, 6880558, 10064408, 11690152, 13761116, 27522232, 58484743, 116969486, 147931997, 233938972, 295863994, 467877944, 591727988, 1183455976, 2514843949, 5029687898, 10059375796, 20118751592]

約数ペア:

[(1, 20118751592), (2, 10059375796), (4, 5029687898), (8, 2514843949), (17, 1183455976), (34, 591727988), (43, 467877944), (68, 295863994), (86, 233938972), (136, 147931997), (172, 116969486), (344, 58484743), (731, 27522232), (1462, 13761116), (1721, 11690152), (1999, 10064408), (2924, 6880558), (3442, 5845076), (3998, 5032204), (5848, 3440279), (6884, 2922538), (7996, 2516102), (13768, 1461269), (15992, 1258051), (29257, 687656), (33983, 592024), (58514, 343828), (67966, 296012), (74003, 271864), (85957, 234056), (117028, 171914), (135932, 148006)]