18893980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{7103}}^1$

素因数の和:7138

約数の個数: 48

約数和(自身を含む): 47738880

約数和(自身を除く): 28844900

約数列:

[1, 2, 4, 5, 7, 10, 14, 19, 20, 28, 35, 38, 70, 76, 95, 133, 140, 190, 266, 380, 532, 665, 1330, 2660, 7103, 14206, 28412, 35515, 49721, 71030, 99442, 134957, 142060, 198884, 248605, 269914, 497210, 539828, 674785, 944699, 994420, 1349570, 1889398, 2699140, 3778796, 4723495, 9446990, 18893980]

約数ペア:

[(1, 18893980), (2, 9446990), (4, 4723495), (5, 3778796), (7, 2699140), (10, 1889398), (14, 1349570), (19, 994420), (20, 944699), (28, 674785), (35, 539828), (38, 497210), (70, 269914), (76, 248605), (95, 198884), (133, 142060), (140, 134957), (190, 99442), (266, 71030), (380, 49721), (532, 35515), (665, 28412), (1330, 14206), (2660, 7103)]