399011775

素因数分解:

$3^1\times 5^2\times {\mathrm{127}}^1\times {\mathrm{163}}^1\times {\mathrm{257}}^1$

素因数の和:560

約数の個数: 48

約数和(自身を含む): 671576064

約数和(自身を除く): 272564289

約数列:

[1, 3, 5, 15, 25, 75, 127, 163, 257, 381, 489, 635, 771, 815, 1285, 1905, 2445, 3175, 3855, 4075, 6425, 9525, 12225, 19275, 20701, 32639, 41891, 62103, 97917, 103505, 125673, 163195, 209455, 310515, 489585, 517525, 628365, 815975, 1047275, 1552575, 2447925, 3141825, 5320157, 15960471, 26600785, 79802355, 133003925, 399011775]

約数ペア:

[(1, 399011775), (3, 133003925), (5, 79802355), (15, 26600785), (25, 15960471), (75, 5320157), (127, 3141825), (163, 2447925), (257, 1552575), (381, 1047275), (489, 815975), (635, 628365), (771, 517525), (815, 489585), (1285, 310515), (1905, 209455), (2445, 163195), (3175, 125673), (3855, 103505), (4075, 97917), (6425, 62103), (9525, 41891), (12225, 32639), (19275, 20701)]