20993868

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{227}}^1\times {\mathrm{367}}^1$

素因数の和:611

約数の個数: 72

約数和(自身を含む): 61082112

約数和(自身を除く): 40088244

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 63, 84, 126, 227, 252, 367, 454, 681, 734, 908, 1101, 1362, 1468, 1589, 2043, 2202, 2569, 2724, 3178, 3303, 4086, 4404, 4767, 5138, 6356, 6606, 7707, 8172, 9534, 10276, 13212, 14301, 15414, 19068, 23121, 28602, 30828, 46242, 57204, 83309, 92484, 166618, 249927, 333236, 499854, 583163, 749781, 999708, 1166326, 1499562, 1749489, 2332652, 2999124, 3498978, 5248467, 6997956, 10496934, 20993868]

約数ペア:

[(1, 20993868), (2, 10496934), (3, 6997956), (4, 5248467), (6, 3498978), (7, 2999124), (9, 2332652), (12, 1749489), (14, 1499562), (18, 1166326), (21, 999708), (28, 749781), (36, 583163), (42, 499854), (63, 333236), (84, 249927), (126, 166618), (227, 92484), (252, 83309), (367, 57204), (454, 46242), (681, 30828), (734, 28602), (908, 23121), (1101, 19068), (1362, 15414), (1468, 14301), (1589, 13212), (2043, 10276), (2202, 9534), (2569, 8172), (2724, 7707), (3178, 6606), (3303, 6356), (4086, 5138), (4404, 4767)]