31911958

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{17}}^2\times {\mathrm{31}}^1\times {\mathrm{137}}^1$

素因数の和:217

約数の個数: 48

約数和(自身を含む): 56939904

約数和(自身を除く): 25027946

約数列:

[1, 2, 13, 17, 26, 31, 34, 62, 137, 221, 274, 289, 403, 442, 527, 578, 806, 1054, 1781, 2329, 3562, 3757, 4247, 4658, 6851, 7514, 8494, 8959, 13702, 17918, 30277, 39593, 55211, 60554, 72199, 79186, 110422, 116467, 144398, 232934, 514709, 938587, 1029418, 1227383, 1877174, 2454766, 15955979, 31911958]

約数ペア:

[(1, 31911958), (2, 15955979), (13, 2454766), (17, 1877174), (26, 1227383), (31, 1029418), (34, 938587), (62, 514709), (137, 232934), (221, 144398), (274, 116467), (289, 110422), (403, 79186), (442, 72199), (527, 60554), (578, 55211), (806, 39593), (1054, 30277), (1781, 17918), (2329, 13702), (3562, 8959), (3757, 8494), (4247, 7514), (4658, 6851)]