21129510

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{53}}^1\times {\mathrm{97}}^1\times {\mathrm{137}}^1$

素因数の和:297

約数の個数: 64

約数和(自身を含む): 52581312

約数和(自身を除く): 31451802

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 53, 97, 106, 137, 159, 194, 265, 274, 291, 318, 411, 485, 530, 582, 685, 795, 822, 970, 1370, 1455, 1590, 2055, 2910, 4110, 5141, 7261, 10282, 13289, 14522, 15423, 21783, 25705, 26578, 30846, 36305, 39867, 43566, 51410, 66445, 72610, 77115, 79734, 108915, 132890, 154230, 199335, 217830, 398670, 704317, 1408634, 2112951, 3521585, 4225902, 7043170, 10564755, 21129510]

約数ペア:

[(1, 21129510), (2, 10564755), (3, 7043170), (5, 4225902), (6, 3521585), (10, 2112951), (15, 1408634), (30, 704317), (53, 398670), (97, 217830), (106, 199335), (137, 154230), (159, 132890), (194, 108915), (265, 79734), (274, 77115), (291, 72610), (318, 66445), (411, 51410), (485, 43566), (530, 39867), (582, 36305), (685, 30846), (795, 26578), (822, 25705), (970, 21783), (1370, 15423), (1455, 14522), (1590, 13289), (2055, 10282), (2910, 7261), (4110, 5141)]