28980500

素因数分解:

$2^2\times 5^3\times {\mathrm{149}}^1\times {\mathrm{389}}^1$

素因数の和:557

約数の個数: 48

約数和(自身を含む): 63882000

約数和(自身を除く): 34901500

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 125, 149, 250, 298, 389, 500, 596, 745, 778, 1490, 1556, 1945, 2980, 3725, 3890, 7450, 7780, 9725, 14900, 18625, 19450, 37250, 38900, 48625, 57961, 74500, 97250, 115922, 194500, 231844, 289805, 579610, 1159220, 1449025, 2898050, 5796100, 7245125, 14490250, 28980500]

約数ペア:

[(1, 28980500), (2, 14490250), (4, 7245125), (5, 5796100), (10, 2898050), (20, 1449025), (25, 1159220), (50, 579610), (100, 289805), (125, 231844), (149, 194500), (250, 115922), (298, 97250), (389, 74500), (500, 57961), (596, 48625), (745, 38900), (778, 37250), (1490, 19450), (1556, 18625), (1945, 14900), (2980, 9725), (3725, 7780), (3890, 7450)]