40652800

素因数分解:

$2^{12}\times 5^2\times {\mathrm{397}}^1$

素因数の和:431

約数の個数: 78

約数和(自身を含む): 101060558

約数和(自身を除く): 60407758

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 128, 160, 200, 256, 320, 397, 400, 512, 640, 794, 800, 1024, 1280, 1588, 1600, 1985, 2048, 2560, 3176, 3200, 3970, 4096, 5120, 6352, 6400, 7940, 9925, 10240, 12704, 12800, 15880, 19850, 20480, 25408, 25600, 31760, 39700, 50816, 51200, 63520, 79400, 101632, 102400, 127040, 158800, 203264, 254080, 317600, 406528, 508160, 635200, 813056, 1016320, 1270400, 1626112, 2032640, 2540800, 4065280, 5081600, 8130560, 10163200, 20326400, 40652800]

約数ペア:

[(1, 40652800), (2, 20326400), (4, 10163200), (5, 8130560), (8, 5081600), (10, 4065280), (16, 2540800), (20, 2032640), (25, 1626112), (32, 1270400), (40, 1016320), (50, 813056), (64, 635200), (80, 508160), (100, 406528), (128, 317600), (160, 254080), (200, 203264), (256, 158800), (320, 127040), (397, 102400), (400, 101632), (512, 79400), (640, 63520), (794, 51200), (800, 50816), (1024, 39700), (1280, 31760), (1588, 25600), (1600, 25408), (1985, 20480), (2048, 19850), (2560, 15880), (3176, 12800), (3200, 12704), (3970, 10240), (4096, 9925), (5120, 7940), (6352, 6400)]