21629296

素因数分解:

$2^4\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{421}}^1$

素因数の和:474

約数の個数: 60

約数和(自身を含む): 47880120

約数和(自身を除く): 26250824

約数列:

[1, 2, 4, 8, 13, 16, 19, 26, 38, 52, 76, 104, 152, 169, 208, 247, 304, 338, 421, 494, 676, 842, 988, 1352, 1684, 1976, 2704, 3211, 3368, 3952, 5473, 6422, 6736, 7999, 10946, 12844, 15998, 21892, 25688, 31996, 43784, 51376, 63992, 71149, 87568, 103987, 127984, 142298, 207974, 284596, 415948, 569192, 831896, 1138384, 1351831, 1663792, 2703662, 5407324, 10814648, 21629296]

約数ペア:

[(1, 21629296), (2, 10814648), (4, 5407324), (8, 2703662), (13, 1663792), (16, 1351831), (19, 1138384), (26, 831896), (38, 569192), (52, 415948), (76, 284596), (104, 207974), (152, 142298), (169, 127984), (208, 103987), (247, 87568), (304, 71149), (338, 63992), (421, 51376), (494, 43784), (676, 31996), (842, 25688), (988, 21892), (1352, 15998), (1684, 12844), (1976, 10946), (2704, 7999), (3211, 6736), (3368, 6422), (3952, 5473)]