21994254

素因数分解:

$2^1\times 3^4\times {\mathrm{137}}^1\times {\mathrm{991}}^1$

素因数の和:1142

約数の個数: 40

約数和(自身を含む): 49693248

約数和(自身を除く): 27698994

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 81, 137, 162, 274, 411, 822, 991, 1233, 1982, 2466, 2973, 3699, 5946, 7398, 8919, 11097, 17838, 22194, 26757, 53514, 80271, 135767, 160542, 271534, 407301, 814602, 1221903, 2443806, 3665709, 7331418, 10997127, 21994254]

約数ペア:

[(1, 21994254), (2, 10997127), (3, 7331418), (6, 3665709), (9, 2443806), (18, 1221903), (27, 814602), (54, 407301), (81, 271534), (137, 160542), (162, 135767), (274, 80271), (411, 53514), (822, 26757), (991, 22194), (1233, 17838), (1982, 11097), (2466, 8919), (2973, 7398), (3699, 5946)]