1284400

素因数分解:

$2^4\times 5^2\times {\mathrm{13}}^2\times {\mathrm{19}}^1$

素因数の和:63

約数の個数: 90

約数和(自身を含む): 3517260

約数和(自身を除く): 2232860

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 19, 20, 25, 26, 38, 40, 50, 52, 65, 76, 80, 95, 100, 104, 130, 152, 169, 190, 200, 208, 247, 260, 304, 325, 338, 380, 400, 475, 494, 520, 650, 676, 760, 845, 950, 988, 1040, 1235, 1300, 1352, 1520, 1690, 1900, 1976, 2470, 2600, 2704, 3211, 3380, 3800, 3952, 4225, 4940, 5200, 6175, 6422, 6760, 7600, 8450, 9880, 12350, 12844, 13520, 16055, 16900, 19760, 24700, 25688, 32110, 33800, 49400, 51376, 64220, 67600, 80275, 98800, 128440, 160550, 256880, 321100, 642200, 1284400]

約数ペア:

[(1, 1284400), (2, 642200), (4, 321100), (5, 256880), (8, 160550), (10, 128440), (13, 98800), (16, 80275), (19, 67600), (20, 64220), (25, 51376), (26, 49400), (38, 33800), (40, 32110), (50, 25688), (52, 24700), (65, 19760), (76, 16900), (80, 16055), (95, 13520), (100, 12844), (104, 12350), (130, 9880), (152, 8450), (169, 7600), (190, 6760), (200, 6422), (208, 6175), (247, 5200), (260, 4940), (304, 4225), (325, 3952), (338, 3800), (380, 3380), (400, 3211), (475, 2704), (494, 2600), (520, 2470), (650, 1976), (676, 1900), (760, 1690), (845, 1520), (950, 1352), (988, 1300), (1040, 1235)]