20651696

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{2309}}^1$

素因数の和:2373

約数の個数: 40

約数和(自身を含む): 44111760

約数和(自身を除く): 23460064

約数列:

[1, 2, 4, 8, 13, 16, 26, 43, 52, 86, 104, 172, 208, 344, 559, 688, 1118, 2236, 2309, 4472, 4618, 8944, 9236, 18472, 30017, 36944, 60034, 99287, 120068, 198574, 240136, 397148, 480272, 794296, 1290731, 1588592, 2581462, 5162924, 10325848, 20651696]

約数ペア:

[(1, 20651696), (2, 10325848), (4, 5162924), (8, 2581462), (13, 1588592), (16, 1290731), (26, 794296), (43, 480272), (52, 397148), (86, 240136), (104, 198574), (172, 120068), (208, 99287), (344, 60034), (559, 36944), (688, 30017), (1118, 18472), (2236, 9236), (2309, 8944), (4472, 4618)]