21199776

素因数分解:

$2^5\times 3^1\times {\mathrm{13}}^1\times {\mathrm{16987}}^1$

素因数の和:17013

約数の個数: 48

約数和(自身を含む): 59933664

約数和(自身を除く): 38733888

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 16, 24, 26, 32, 39, 48, 52, 78, 96, 104, 156, 208, 312, 416, 624, 1248, 16987, 33974, 50961, 67948, 101922, 135896, 203844, 220831, 271792, 407688, 441662, 543584, 662493, 815376, 883324, 1324986, 1630752, 1766648, 2649972, 3533296, 5299944, 7066592, 10599888, 21199776]

約数ペア:

[(1, 21199776), (2, 10599888), (3, 7066592), (4, 5299944), (6, 3533296), (8, 2649972), (12, 1766648), (13, 1630752), (16, 1324986), (24, 883324), (26, 815376), (32, 662493), (39, 543584), (48, 441662), (52, 407688), (78, 271792), (96, 220831), (104, 203844), (156, 135896), (208, 101922), (312, 67948), (416, 50961), (624, 33974), (1248, 16987)]