21305104

素因数分解:

$2^4\times {\mathrm{61}}^1\times {\mathrm{83}}^1\times {\mathrm{263}}^1$

素因数の和:415

約数の個数: 40

約数和(自身を含む): 42622272

約数和(自身を除く): 21317168

約数列:

[1, 2, 4, 8, 16, 61, 83, 122, 166, 244, 263, 332, 488, 526, 664, 976, 1052, 1328, 2104, 4208, 5063, 10126, 16043, 20252, 21829, 32086, 40504, 43658, 64172, 81008, 87316, 128344, 174632, 256688, 349264, 1331569, 2663138, 5326276, 10652552, 21305104]

約数ペア:

[(1, 21305104), (2, 10652552), (4, 5326276), (8, 2663138), (16, 1331569), (61, 349264), (83, 256688), (122, 174632), (166, 128344), (244, 87316), (263, 81008), (332, 64172), (488, 43658), (526, 40504), (664, 32086), (976, 21829), (1052, 20252), (1328, 16043), (2104, 10126), (4208, 5063)]