21543750

素因数分解:

$2^1\times 3^2\times 5^5\times {\mathrm{383}}^1$

素因数の和:416

約数の個数: 72

約数和(自身を含む): 58496256

約数和(自身を除く): 36952506

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 25, 30, 45, 50, 75, 90, 125, 150, 225, 250, 375, 383, 450, 625, 750, 766, 1125, 1149, 1250, 1875, 1915, 2250, 2298, 3125, 3447, 3750, 3830, 5625, 5745, 6250, 6894, 9375, 9575, 11250, 11490, 17235, 18750, 19150, 28125, 28725, 34470, 47875, 56250, 57450, 86175, 95750, 143625, 172350, 239375, 287250, 430875, 478750, 718125, 861750, 1196875, 1436250, 2154375, 2393750, 3590625, 4308750, 7181250, 10771875, 21543750]

約数ペア:

[(1, 21543750), (2, 10771875), (3, 7181250), (5, 4308750), (6, 3590625), (9, 2393750), (10, 2154375), (15, 1436250), (18, 1196875), (25, 861750), (30, 718125), (45, 478750), (50, 430875), (75, 287250), (90, 239375), (125, 172350), (150, 143625), (225, 95750), (250, 86175), (375, 57450), (383, 56250), (450, 47875), (625, 34470), (750, 28725), (766, 28125), (1125, 19150), (1149, 18750), (1250, 17235), (1875, 11490), (1915, 11250), (2250, 9575), (2298, 9375), (3125, 6894), (3447, 6250), (3750, 5745), (3830, 5625)]