21411200

素因数分解:

$2^7\times 5^2\times {\mathrm{6691}}^1$

素因数の和:6715

約数の個数: 48

約数和(自身を含む): 52900260

約数和(自身を除く): 31489060

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 128, 160, 200, 320, 400, 640, 800, 1600, 3200, 6691, 13382, 26764, 33455, 53528, 66910, 107056, 133820, 167275, 214112, 267640, 334550, 428224, 535280, 669100, 856448, 1070560, 1338200, 2141120, 2676400, 4282240, 5352800, 10705600, 21411200]

約数ペア:

[(1, 21411200), (2, 10705600), (4, 5352800), (5, 4282240), (8, 2676400), (10, 2141120), (16, 1338200), (20, 1070560), (25, 856448), (32, 669100), (40, 535280), (50, 428224), (64, 334550), (80, 267640), (100, 214112), (128, 167275), (160, 133820), (200, 107056), (320, 66910), (400, 53528), (640, 33455), (800, 26764), (1600, 13382), (3200, 6691)]