251019620

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^2\times {\mathrm{137}}^1\times {\mathrm{317}}^1$

素因数の和:497

約数の個数: 72

約数和(自身を含む): 565840296

約数和(自身を除く): 314820676

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 137, 170, 274, 289, 317, 340, 548, 578, 634, 685, 1156, 1268, 1370, 1445, 1585, 2329, 2740, 2890, 3170, 4658, 5389, 5780, 6340, 9316, 10778, 11645, 21556, 23290, 26945, 39593, 43429, 46580, 53890, 79186, 86858, 91613, 107780, 158372, 173716, 183226, 197965, 217145, 366452, 395930, 434290, 458065, 738293, 791860, 868580, 916130, 1476586, 1832260, 2953172, 3691465, 7382930, 12550981, 14765860, 25101962, 50203924, 62754905, 125509810, 251019620]

約数ペア:

[(1, 251019620), (2, 125509810), (4, 62754905), (5, 50203924), (10, 25101962), (17, 14765860), (20, 12550981), (34, 7382930), (68, 3691465), (85, 2953172), (137, 1832260), (170, 1476586), (274, 916130), (289, 868580), (317, 791860), (340, 738293), (548, 458065), (578, 434290), (634, 395930), (685, 366452), (1156, 217145), (1268, 197965), (1370, 183226), (1445, 173716), (1585, 158372), (2329, 107780), (2740, 91613), (2890, 86858), (3170, 79186), (4658, 53890), (5389, 46580), (5780, 43429), (6340, 39593), (9316, 26945), (10778, 23290), (11645, 21556)]