21657376

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{659}}^1$

素因数の和:761

約数の個数: 48

約数和(自身を含む): 46569600

約数和(自身を除く): 24912224

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 79, 104, 158, 208, 316, 416, 632, 659, 1027, 1264, 1318, 2054, 2528, 2636, 4108, 5272, 8216, 8567, 10544, 16432, 17134, 21088, 32864, 34268, 52061, 68536, 104122, 137072, 208244, 274144, 416488, 676793, 832976, 1353586, 1665952, 2707172, 5414344, 10828688, 21657376]

約数ペア:

[(1, 21657376), (2, 10828688), (4, 5414344), (8, 2707172), (13, 1665952), (16, 1353586), (26, 832976), (32, 676793), (52, 416488), (79, 274144), (104, 208244), (158, 137072), (208, 104122), (316, 68536), (416, 52061), (632, 34268), (659, 32864), (1027, 21088), (1264, 17134), (1318, 16432), (2054, 10544), (2528, 8567), (2636, 8216), (4108, 5272)]