20965672

素因数分解:

$2^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{929}}^1$

素因数の和:986

約数の個数: 64

約数和(自身を含む): 49996800

約数和(自身を除く): 29031128

約数列:

[1, 2, 4, 7, 8, 13, 14, 26, 28, 31, 52, 56, 62, 91, 104, 124, 182, 217, 248, 364, 403, 434, 728, 806, 868, 929, 1612, 1736, 1858, 2821, 3224, 3716, 5642, 6503, 7432, 11284, 12077, 13006, 22568, 24154, 26012, 28799, 48308, 52024, 57598, 84539, 96616, 115196, 169078, 201593, 230392, 338156, 374387, 403186, 676312, 748774, 806372, 1497548, 1612744, 2620709, 2995096, 5241418, 10482836, 20965672]

約数ペア:

[(1, 20965672), (2, 10482836), (4, 5241418), (7, 2995096), (8, 2620709), (13, 1612744), (14, 1497548), (26, 806372), (28, 748774), (31, 676312), (52, 403186), (56, 374387), (62, 338156), (91, 230392), (104, 201593), (124, 169078), (182, 115196), (217, 96616), (248, 84539), (364, 57598), (403, 52024), (434, 48308), (728, 28799), (806, 26012), (868, 24154), (929, 22568), (1612, 13006), (1736, 12077), (1858, 11284), (2821, 7432), (3224, 6503), (3716, 5642)]