31301380

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{79}}^1\times {\mathrm{1801}}^1$

素因数の和:1900

約数の個数: 48

約数和(自身を含む): 72656640

約数和(自身を除く): 41355260

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 79, 110, 158, 220, 316, 395, 790, 869, 1580, 1738, 1801, 3476, 3602, 4345, 7204, 8690, 9005, 17380, 18010, 19811, 36020, 39622, 79244, 99055, 142279, 198110, 284558, 396220, 569116, 711395, 1422790, 1565069, 2845580, 3130138, 6260276, 7825345, 15650690, 31301380]

約数ペア:

[(1, 31301380), (2, 15650690), (4, 7825345), (5, 6260276), (10, 3130138), (11, 2845580), (20, 1565069), (22, 1422790), (44, 711395), (55, 569116), (79, 396220), (110, 284558), (158, 198110), (220, 142279), (316, 99055), (395, 79244), (790, 39622), (869, 36020), (1580, 19811), (1738, 18010), (1801, 17380), (3476, 9005), (3602, 8690), (4345, 7204)]