18906975

素因数分解:

$3^2\times 5^2\times {\mathrm{17}}^1\times {\mathrm{4943}}^1$

素因数の和:4976

約数の個数: 36

約数和(自身を含む): 35863776

約数和(自身を除く): 16956801

約数列:

[1, 3, 5, 9, 15, 17, 25, 45, 51, 75, 85, 153, 225, 255, 425, 765, 1275, 3825, 4943, 14829, 24715, 44487, 74145, 84031, 123575, 222435, 252093, 370725, 420155, 756279, 1112175, 1260465, 2100775, 3781395, 6302325, 18906975]

約数ペア:

[(1, 18906975), (3, 6302325), (5, 3781395), (9, 2100775), (15, 1260465), (17, 1112175), (25, 756279), (45, 420155), (51, 370725), (75, 252093), (85, 222435), (153, 123575), (225, 84031), (255, 74145), (425, 44487), (765, 24715), (1275, 14829), (3825, 4943)]