81349960

素因数分解:

$2^3\times 5^1\times {\mathrm{83}}^1\times {\mathrm{107}}^1\times {\mathrm{229}}^1$

素因数の和:430

約数の個数: 64

約数和(自身を含む): 187790400

約数和(自身を除く): 106440440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 83, 107, 166, 214, 229, 332, 415, 428, 458, 535, 664, 830, 856, 916, 1070, 1145, 1660, 1832, 2140, 2290, 3320, 4280, 4580, 8881, 9160, 17762, 19007, 24503, 35524, 38014, 44405, 49006, 71048, 76028, 88810, 95035, 98012, 122515, 152056, 177620, 190070, 196024, 245030, 355240, 380140, 490060, 760280, 980120, 2033749, 4067498, 8134996, 10168745, 16269992, 20337490, 40674980, 81349960]

約数ペア:

[(1, 81349960), (2, 40674980), (4, 20337490), (5, 16269992), (8, 10168745), (10, 8134996), (20, 4067498), (40, 2033749), (83, 980120), (107, 760280), (166, 490060), (214, 380140), (229, 355240), (332, 245030), (415, 196024), (428, 190070), (458, 177620), (535, 152056), (664, 122515), (830, 98012), (856, 95035), (916, 88810), (1070, 76028), (1145, 71048), (1660, 49006), (1832, 44405), (2140, 38014), (2290, 35524), (3320, 24503), (4280, 19007), (4580, 17762), (8881, 9160)]