209871800

素因数分解:

$2^3\times 5^2\times {\mathrm{17}}^2\times {\mathrm{3631}}^1$

素因数の和:3681

約数の個数: 72

約数和(自身を含む): 518486160

約数和(自身を除く): 308614360

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 25, 34, 40, 50, 68, 85, 100, 136, 170, 200, 289, 340, 425, 578, 680, 850, 1156, 1445, 1700, 2312, 2890, 3400, 3631, 5780, 7225, 7262, 11560, 14450, 14524, 18155, 28900, 29048, 36310, 57800, 61727, 72620, 90775, 123454, 145240, 181550, 246908, 308635, 363100, 493816, 617270, 726200, 1049359, 1234540, 1543175, 2098718, 2469080, 3086350, 4197436, 5246795, 6172700, 8394872, 10493590, 12345400, 20987180, 26233975, 41974360, 52467950, 104935900, 209871800]

約数ペア:

[(1, 209871800), (2, 104935900), (4, 52467950), (5, 41974360), (8, 26233975), (10, 20987180), (17, 12345400), (20, 10493590), (25, 8394872), (34, 6172700), (40, 5246795), (50, 4197436), (68, 3086350), (85, 2469080), (100, 2098718), (136, 1543175), (170, 1234540), (200, 1049359), (289, 726200), (340, 617270), (425, 493816), (578, 363100), (680, 308635), (850, 246908), (1156, 181550), (1445, 145240), (1700, 123454), (2312, 90775), (2890, 72620), (3400, 61727), (3631, 57800), (5780, 36310), (7225, 29048), (7262, 28900), (11560, 18155), (14450, 14524)]