19965544

素因数分解:

$2^3\times {\mathrm{61}}^1\times {\mathrm{163}}^1\times {\mathrm{251}}^1$

素因数の和:481

約数の個数: 32

約数和(自身を含む): 38435040

約数和(自身を除く): 18469496

約数列:

[1, 2, 4, 8, 61, 122, 163, 244, 251, 326, 488, 502, 652, 1004, 1304, 2008, 9943, 15311, 19886, 30622, 39772, 40913, 61244, 79544, 81826, 122488, 163652, 327304, 2495693, 4991386, 9982772, 19965544]

約数ペア:

[(1, 19965544), (2, 9982772), (4, 4991386), (8, 2495693), (61, 327304), (122, 163652), (163, 122488), (244, 81826), (251, 79544), (326, 61244), (488, 40913), (502, 39772), (652, 30622), (1004, 19886), (1304, 15311), (2008, 9943)]