642200

素因数分解:

$2^3\times 5^2\times {\mathrm{13}}^2\times {\mathrm{19}}^1$

素因数の和:61

約数の個数: 72

約数和(自身を含む): 1701900

約数和(自身を除く): 1059700

約数列:

[1, 2, 4, 5, 8, 10, 13, 19, 20, 25, 26, 38, 40, 50, 52, 65, 76, 95, 100, 104, 130, 152, 169, 190, 200, 247, 260, 325, 338, 380, 475, 494, 520, 650, 676, 760, 845, 950, 988, 1235, 1300, 1352, 1690, 1900, 1976, 2470, 2600, 3211, 3380, 3800, 4225, 4940, 6175, 6422, 6760, 8450, 9880, 12350, 12844, 16055, 16900, 24700, 25688, 32110, 33800, 49400, 64220, 80275, 128440, 160550, 321100, 642200]

約数ペア:

[(1, 642200), (2, 321100), (4, 160550), (5, 128440), (8, 80275), (10, 64220), (13, 49400), (19, 33800), (20, 32110), (25, 25688), (26, 24700), (38, 16900), (40, 16055), (50, 12844), (52, 12350), (65, 9880), (76, 8450), (95, 6760), (100, 6422), (104, 6175), (130, 4940), (152, 4225), (169, 3800), (190, 3380), (200, 3211), (247, 2600), (260, 2470), (325, 1976), (338, 1900), (380, 1690), (475, 1352), (494, 1300), (520, 1235), (650, 988), (676, 950), (760, 845)]