19980510

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{191}}^1\times {\mathrm{317}}^1$

素因数の和:529

約数の個数: 64

約数和(自身を含む): 52752384

約数和(自身を除く): 32771874

約数列:

[1, 2, 3, 5, 6, 10, 11, 15, 22, 30, 33, 55, 66, 110, 165, 191, 317, 330, 382, 573, 634, 951, 955, 1146, 1585, 1902, 1910, 2101, 2865, 3170, 3487, 4202, 4755, 5730, 6303, 6974, 9510, 10461, 10505, 12606, 17435, 20922, 21010, 31515, 34870, 52305, 60547, 63030, 104610, 121094, 181641, 302735, 363282, 605470, 666017, 908205, 1332034, 1816410, 1998051, 3330085, 3996102, 6660170, 9990255, 19980510]

約数ペア:

[(1, 19980510), (2, 9990255), (3, 6660170), (5, 3996102), (6, 3330085), (10, 1998051), (11, 1816410), (15, 1332034), (22, 908205), (30, 666017), (33, 605470), (55, 363282), (66, 302735), (110, 181641), (165, 121094), (191, 104610), (317, 63030), (330, 60547), (382, 52305), (573, 34870), (634, 31515), (951, 21010), (955, 20922), (1146, 17435), (1585, 12606), (1902, 10505), (1910, 10461), (2101, 9510), (2865, 6974), (3170, 6303), (3487, 5730), (4202, 4755)]