15940820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{3673}}^1$

素因数の和:3720

約数の個数: 48

約数和(自身を含む): 39502848

約数和(自身を除く): 23562028

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 31, 35, 62, 70, 124, 140, 155, 217, 310, 434, 620, 868, 1085, 2170, 3673, 4340, 7346, 14692, 18365, 25711, 36730, 51422, 73460, 102844, 113863, 128555, 227726, 257110, 455452, 514220, 569315, 797041, 1138630, 1594082, 2277260, 3188164, 3985205, 7970410, 15940820]

約数ペア:

[(1, 15940820), (2, 7970410), (4, 3985205), (5, 3188164), (7, 2277260), (10, 1594082), (14, 1138630), (20, 797041), (28, 569315), (31, 514220), (35, 455452), (62, 257110), (70, 227726), (124, 128555), (140, 113863), (155, 102844), (217, 73460), (310, 51422), (434, 36730), (620, 25711), (868, 18365), (1085, 14692), (2170, 7346), (3673, 4340)]