21708804

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{67}}^2$

素因数の和:185

約数の個数: 72

約数和(自身を含む): 57163008

約数和(自身を除く): 35454204

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 31, 39, 52, 62, 67, 78, 93, 124, 134, 156, 186, 201, 268, 372, 402, 403, 804, 806, 871, 1209, 1612, 1742, 2077, 2418, 2613, 3484, 4154, 4489, 4836, 5226, 6231, 8308, 8978, 10452, 12462, 13467, 17956, 24924, 26934, 27001, 53868, 54002, 58357, 81003, 108004, 116714, 139159, 162006, 175071, 233428, 278318, 324012, 350142, 417477, 556636, 700284, 834954, 1669908, 1809067, 3618134, 5427201, 7236268, 10854402, 21708804]

約数ペア:

[(1, 21708804), (2, 10854402), (3, 7236268), (4, 5427201), (6, 3618134), (12, 1809067), (13, 1669908), (26, 834954), (31, 700284), (39, 556636), (52, 417477), (62, 350142), (67, 324012), (78, 278318), (93, 233428), (124, 175071), (134, 162006), (156, 139159), (186, 116714), (201, 108004), (268, 81003), (372, 58357), (402, 54002), (403, 53868), (804, 27001), (806, 26934), (871, 24924), (1209, 17956), (1612, 13467), (1742, 12462), (2077, 10452), (2418, 8978), (2613, 8308), (3484, 6231), (4154, 5226), (4489, 4836)]