20188450

素因数分解:

$2^1\times 5^2\times {\mathrm{19}}^1\times {\mathrm{79}}^1\times {\mathrm{269}}^1$

素因数の和:379

約数の個数: 48

約数和(自身を含む): 40176000

約数和(自身を除く): 19987550

約数列:

[1, 2, 5, 10, 19, 25, 38, 50, 79, 95, 158, 190, 269, 395, 475, 538, 790, 950, 1345, 1501, 1975, 2690, 3002, 3950, 5111, 6725, 7505, 10222, 13450, 15010, 21251, 25555, 37525, 42502, 51110, 75050, 106255, 127775, 212510, 255550, 403769, 531275, 807538, 1062550, 2018845, 4037690, 10094225, 20188450]

約数ペア:

[(1, 20188450), (2, 10094225), (5, 4037690), (10, 2018845), (19, 1062550), (25, 807538), (38, 531275), (50, 403769), (79, 255550), (95, 212510), (158, 127775), (190, 106255), (269, 75050), (395, 51110), (475, 42502), (538, 37525), (790, 25555), (950, 21251), (1345, 15010), (1501, 13450), (1975, 10222), (2690, 7505), (3002, 6725), (3950, 5111)]