18800800

素因数分解:

$2^5\times 5^2\times {\mathrm{71}}^1\times {\mathrm{331}}^1$

素因数の和:422

約数の個数: 72

約数和(自身を含む): 46684512

約数和(自身を除く): 27883712

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 71, 80, 100, 142, 160, 200, 284, 331, 355, 400, 568, 662, 710, 800, 1136, 1324, 1420, 1655, 1775, 2272, 2648, 2840, 3310, 3550, 5296, 5680, 6620, 7100, 8275, 10592, 11360, 13240, 14200, 16550, 23501, 26480, 28400, 33100, 47002, 52960, 56800, 66200, 94004, 117505, 132400, 188008, 235010, 264800, 376016, 470020, 587525, 752032, 940040, 1175050, 1880080, 2350100, 3760160, 4700200, 9400400, 18800800]

約数ペア:

[(1, 18800800), (2, 9400400), (4, 4700200), (5, 3760160), (8, 2350100), (10, 1880080), (16, 1175050), (20, 940040), (25, 752032), (32, 587525), (40, 470020), (50, 376016), (71, 264800), (80, 235010), (100, 188008), (142, 132400), (160, 117505), (200, 94004), (284, 66200), (331, 56800), (355, 52960), (400, 47002), (568, 33100), (662, 28400), (710, 26480), (800, 23501), (1136, 16550), (1324, 14200), (1420, 13240), (1655, 11360), (1775, 10592), (2272, 8275), (2648, 7100), (2840, 6620), (3310, 5680), (3550, 5296)]