20986576

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{163}}^1\times {\mathrm{619}}^1$

素因数の和:803

約数の個数: 40

約数和(自身を含む): 44129120

約数和(自身を除く): 23142544

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 163, 208, 326, 619, 652, 1238, 1304, 2119, 2476, 2608, 4238, 4952, 8047, 8476, 9904, 16094, 16952, 32188, 33904, 64376, 100897, 128752, 201794, 403588, 807176, 1311661, 1614352, 2623322, 5246644, 10493288, 20986576]

約数ペア:

[(1, 20986576), (2, 10493288), (4, 5246644), (8, 2623322), (13, 1614352), (16, 1311661), (26, 807176), (52, 403588), (104, 201794), (163, 128752), (208, 100897), (326, 64376), (619, 33904), (652, 32188), (1238, 16952), (1304, 16094), (2119, 9904), (2476, 8476), (2608, 8047), (4238, 4952)]