20321574

素因数分解:

$2^1\times 3^1\times 7^2\times {\mathrm{13}}^2\times {\mathrm{409}}^1$

素因数の和:454

約数の個数: 72

約数和(自身を含む): 51320520

約数和(自身を除く): 30998946

約数列:

[1, 2, 3, 6, 7, 13, 14, 21, 26, 39, 42, 49, 78, 91, 98, 147, 169, 182, 273, 294, 338, 409, 507, 546, 637, 818, 1014, 1183, 1227, 1274, 1911, 2366, 2454, 2863, 3549, 3822, 5317, 5726, 7098, 8281, 8589, 10634, 15951, 16562, 17178, 20041, 24843, 31902, 37219, 40082, 49686, 60123, 69121, 74438, 111657, 120246, 138242, 207363, 223314, 260533, 414726, 483847, 521066, 781599, 967694, 1451541, 1563198, 2903082, 3386929, 6773858, 10160787, 20321574]

約数ペア:

[(1, 20321574), (2, 10160787), (3, 6773858), (6, 3386929), (7, 2903082), (13, 1563198), (14, 1451541), (21, 967694), (26, 781599), (39, 521066), (42, 483847), (49, 414726), (78, 260533), (91, 223314), (98, 207363), (147, 138242), (169, 120246), (182, 111657), (273, 74438), (294, 69121), (338, 60123), (409, 49686), (507, 40082), (546, 37219), (637, 31902), (818, 24843), (1014, 20041), (1183, 17178), (1227, 16562), (1274, 15951), (1911, 10634), (2366, 8589), (2454, 8281), (2863, 7098), (3549, 5726), (3822, 5317)]