15857980

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{83}}^1\times {\mathrm{233}}^1$

素因数の和:366

約数の個数: 48

約数和(自身を含む): 34673184

約数和(自身を除く): 18815204

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 83, 164, 166, 205, 233, 332, 410, 415, 466, 820, 830, 932, 1165, 1660, 2330, 3403, 4660, 6806, 9553, 13612, 17015, 19106, 19339, 34030, 38212, 38678, 47765, 68060, 77356, 95530, 96695, 191060, 193390, 386780, 792899, 1585798, 3171596, 3964495, 7928990, 15857980]

約数ペア:

[(1, 15857980), (2, 7928990), (4, 3964495), (5, 3171596), (10, 1585798), (20, 792899), (41, 386780), (82, 193390), (83, 191060), (164, 96695), (166, 95530), (205, 77356), (233, 68060), (332, 47765), (410, 38678), (415, 38212), (466, 34030), (820, 19339), (830, 19106), (932, 17015), (1165, 13612), (1660, 9553), (2330, 6806), (3403, 4660)]