17981988

素因数分解:

$2^2\times 3^1\times {\mathrm{17}}^1\times {\mathrm{181}}^1\times {\mathrm{487}}^1$

素因数の和:692

約数の個数: 48

約数和(自身を含む): 44763264

約数和(自身を除く): 26781276

約数列:

[1, 2, 3, 4, 6, 12, 17, 34, 51, 68, 102, 181, 204, 362, 487, 543, 724, 974, 1086, 1461, 1948, 2172, 2922, 3077, 5844, 6154, 8279, 9231, 12308, 16558, 18462, 24837, 33116, 36924, 49674, 88147, 99348, 176294, 264441, 352588, 528882, 1057764, 1498499, 2996998, 4495497, 5993996, 8990994, 17981988]

約数ペア:

[(1, 17981988), (2, 8990994), (3, 5993996), (4, 4495497), (6, 2996998), (12, 1498499), (17, 1057764), (34, 528882), (51, 352588), (68, 264441), (102, 176294), (181, 99348), (204, 88147), (362, 49674), (487, 36924), (543, 33116), (724, 24837), (974, 18462), (1086, 16558), (1461, 12308), (1948, 9231), (2172, 8279), (2922, 6154), (3077, 5844)]