686721997

素因数分解:

${\mathrm{13}}^1\times {\mathrm{19}}^2\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{83}}^1$

素因数の和:218

約数の個数: 48

約数和(自身を含む): 828007488

約数和(自身を除く): 141285491

約数列:

[1, 13, 19, 41, 43, 83, 247, 361, 533, 559, 779, 817, 1079, 1577, 1763, 3403, 3569, 4693, 10127, 10621, 14801, 15523, 20501, 22919, 29963, 33497, 44239, 46397, 64657, 67811, 146329, 192413, 201799, 389519, 435461, 636443, 840541, 881543, 1228483, 1288409, 1902277, 2780251, 8273759, 15970279, 16749317, 36143263, 52824769, 686721997]

約数ペア:

[(1, 686721997), (13, 52824769), (19, 36143263), (41, 16749317), (43, 15970279), (83, 8273759), (247, 2780251), (361, 1902277), (533, 1288409), (559, 1228483), (779, 881543), (817, 840541), (1079, 636443), (1577, 435461), (1763, 389519), (3403, 201799), (3569, 192413), (4693, 146329), (10127, 67811), (10621, 64657), (14801, 46397), (15523, 44239), (20501, 33497), (22919, 29963)]