28971980

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{83}}^1\times {\mathrm{563}}^1$

素因数の和:686

約数の個数: 48

約数和(自身を含む): 63673344

約数和(自身を除く): 34701364

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 83, 124, 155, 166, 310, 332, 415, 563, 620, 830, 1126, 1660, 2252, 2573, 2815, 5146, 5630, 10292, 11260, 12865, 17453, 25730, 34906, 46729, 51460, 69812, 87265, 93458, 174530, 186916, 233645, 349060, 467290, 934580, 1448599, 2897198, 5794396, 7242995, 14485990, 28971980]

約数ペア:

[(1, 28971980), (2, 14485990), (4, 7242995), (5, 5794396), (10, 2897198), (20, 1448599), (31, 934580), (62, 467290), (83, 349060), (124, 233645), (155, 186916), (166, 174530), (310, 93458), (332, 87265), (415, 69812), (563, 51460), (620, 46729), (830, 34906), (1126, 25730), (1660, 17453), (2252, 12865), (2573, 11260), (2815, 10292), (5146, 5630)]