21671804

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{4139}}^1$

素因数の和:4178

約数の個数: 48

約数和(自身を含む): 50077440

約数和(自身を除く): 28405636

約数列:

[1, 2, 4, 7, 11, 14, 17, 22, 28, 34, 44, 68, 77, 119, 154, 187, 238, 308, 374, 476, 748, 1309, 2618, 4139, 5236, 8278, 16556, 28973, 45529, 57946, 70363, 91058, 115892, 140726, 182116, 281452, 318703, 492541, 637406, 773993, 985082, 1274812, 1547986, 1970164, 3095972, 5417951, 10835902, 21671804]

約数ペア:

[(1, 21671804), (2, 10835902), (4, 5417951), (7, 3095972), (11, 1970164), (14, 1547986), (17, 1274812), (22, 985082), (28, 773993), (34, 637406), (44, 492541), (68, 318703), (77, 281452), (119, 182116), (154, 140726), (187, 115892), (238, 91058), (308, 70363), (374, 57946), (476, 45529), (748, 28973), (1309, 16556), (2618, 8278), (4139, 5236)]