20860496

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{271}}^1\times {\mathrm{283}}^1$

素因数の和:579

約数の個数: 40

約数和(自身を含む): 43104384

約数和(自身を除く): 22243888

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 271, 272, 283, 542, 566, 1084, 1132, 2168, 2264, 4336, 4528, 4607, 4811, 9214, 9622, 18428, 19244, 36856, 38488, 73712, 76693, 76976, 153386, 306772, 613544, 1227088, 1303781, 2607562, 5215124, 10430248, 20860496]

約数ペア:

[(1, 20860496), (2, 10430248), (4, 5215124), (8, 2607562), (16, 1303781), (17, 1227088), (34, 613544), (68, 306772), (136, 153386), (271, 76976), (272, 76693), (283, 73712), (542, 38488), (566, 36856), (1084, 19244), (1132, 18428), (2168, 9622), (2264, 9214), (4336, 4811), (4528, 4607)]