20978584

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{12547}}^1$

素因数の和:12583

約数の個数: 32

約数和(自身を含む): 45172800

約数和(自身を除く): 24194216

約数列:

[1, 2, 4, 8, 11, 19, 22, 38, 44, 76, 88, 152, 209, 418, 836, 1672, 12547, 25094, 50188, 100376, 138017, 238393, 276034, 476786, 552068, 953572, 1104136, 1907144, 2622323, 5244646, 10489292, 20978584]

約数ペア:

[(1, 20978584), (2, 10489292), (4, 5244646), (8, 2622323), (11, 1907144), (19, 1104136), (22, 953572), (38, 552068), (44, 476786), (76, 276034), (88, 238393), (152, 138017), (209, 100376), (418, 50188), (836, 25094), (1672, 12547)]