18713708

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1$

素因数の和:127

約数の個数: 72

約数和(自身を含む): 39352320

約数和(自身を除く): 20638612

約数列:

[1, 2, 4, 13, 19, 26, 31, 38, 47, 52, 62, 76, 94, 124, 169, 188, 247, 338, 403, 494, 589, 611, 676, 806, 893, 988, 1178, 1222, 1457, 1612, 1786, 2356, 2444, 2914, 3211, 3572, 5239, 5828, 6422, 7657, 7943, 10478, 11609, 12844, 15314, 15886, 18941, 20956, 23218, 27683, 30628, 31772, 37882, 46436, 55366, 75764, 99541, 110732, 150917, 199082, 246233, 301834, 359879, 398164, 492466, 603668, 719758, 984932, 1439516, 4678427, 9356854, 18713708]

約数ペア:

[(1, 18713708), (2, 9356854), (4, 4678427), (13, 1439516), (19, 984932), (26, 719758), (31, 603668), (38, 492466), (47, 398164), (52, 359879), (62, 301834), (76, 246233), (94, 199082), (124, 150917), (169, 110732), (188, 99541), (247, 75764), (338, 55366), (403, 46436), (494, 37882), (589, 31772), (611, 30628), (676, 27683), (806, 23218), (893, 20956), (988, 18941), (1178, 15886), (1222, 15314), (1457, 12844), (1612, 11609), (1786, 10478), (2356, 7943), (2444, 7657), (2914, 6422), (3211, 5828), (3572, 5239)]