18420980

素因数分解:

$2^2\times 5^1\times {\mathrm{59}}^1\times {\mathrm{67}}^1\times {\mathrm{233}}^1$

素因数の和:368

約数の個数: 48

約数和(自身を含む): 40098240

約数和(自身を除く): 21677260

約数列:

[1, 2, 4, 5, 10, 20, 59, 67, 118, 134, 233, 236, 268, 295, 335, 466, 590, 670, 932, 1165, 1180, 1340, 2330, 3953, 4660, 7906, 13747, 15611, 15812, 19765, 27494, 31222, 39530, 54988, 62444, 68735, 78055, 79060, 137470, 156110, 274940, 312220, 921049, 1842098, 3684196, 4605245, 9210490, 18420980]

約数ペア:

[(1, 18420980), (2, 9210490), (4, 4605245), (5, 3684196), (10, 1842098), (20, 921049), (59, 312220), (67, 274940), (118, 156110), (134, 137470), (233, 79060), (236, 78055), (268, 68735), (295, 62444), (335, 54988), (466, 39530), (590, 31222), (670, 27494), (932, 19765), (1165, 15812), (1180, 15611), (1340, 13747), (2330, 7906), (3953, 4660)]