20819056

素因数分解:

$2^4\times {\mathrm{61}}^1\times {\mathrm{83}}^1\times {\mathrm{257}}^1$

素因数の和:409

約数の個数: 40

約数和(自身を含む): 41653584

約数和(自身を除く): 20834528

約数列:

[1, 2, 4, 8, 16, 61, 83, 122, 166, 244, 257, 332, 488, 514, 664, 976, 1028, 1328, 2056, 4112, 5063, 10126, 15677, 20252, 21331, 31354, 40504, 42662, 62708, 81008, 85324, 125416, 170648, 250832, 341296, 1301191, 2602382, 5204764, 10409528, 20819056]

約数ペア:

[(1, 20819056), (2, 10409528), (4, 5204764), (8, 2602382), (16, 1301191), (61, 341296), (83, 250832), (122, 170648), (166, 125416), (244, 85324), (257, 81008), (332, 62708), (488, 42662), (514, 40504), (664, 31354), (976, 21331), (1028, 20252), (1328, 15677), (2056, 10126), (4112, 5063)]