311740

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{109}}^1$

素因数の和:142

約数の個数: 48

約数和(自身を含む): 776160

約数和(自身を除く): 464420

約数列:

[1, 2, 4, 5, 10, 11, 13, 20, 22, 26, 44, 52, 55, 65, 109, 110, 130, 143, 218, 220, 260, 286, 436, 545, 572, 715, 1090, 1199, 1417, 1430, 2180, 2398, 2834, 2860, 4796, 5668, 5995, 7085, 11990, 14170, 15587, 23980, 28340, 31174, 62348, 77935, 155870, 311740]

約数ペア:

[(1, 311740), (2, 155870), (4, 77935), (5, 62348), (10, 31174), (11, 28340), (13, 23980), (20, 15587), (22, 14170), (26, 11990), (44, 7085), (52, 5995), (55, 5668), (65, 4796), (109, 2860), (110, 2834), (130, 2398), (143, 2180), (218, 1430), (220, 1417), (260, 1199), (286, 1090), (436, 715), (545, 572)]