72471820

素因数分解:

$2^2\times 5^1\times {\mathrm{131}}^1\times {\mathrm{139}}^1\times {\mathrm{199}}^1$

素因数の和:478

約数の個数: 48

約数和(自身を含む): 155232000

約数和(自身を除く): 82760180

約数列:

[1, 2, 4, 5, 10, 20, 131, 139, 199, 262, 278, 398, 524, 556, 655, 695, 796, 995, 1310, 1390, 1990, 2620, 2780, 3980, 18209, 26069, 27661, 36418, 52138, 55322, 72836, 91045, 104276, 110644, 130345, 138305, 182090, 260690, 276610, 364180, 521380, 553220, 3623591, 7247182, 14494364, 18117955, 36235910, 72471820]

約数ペア:

[(1, 72471820), (2, 36235910), (4, 18117955), (5, 14494364), (10, 7247182), (20, 3623591), (131, 553220), (139, 521380), (199, 364180), (262, 276610), (278, 260690), (398, 182090), (524, 138305), (556, 130345), (655, 110644), (695, 104276), (796, 91045), (995, 72836), (1310, 55322), (1390, 52138), (1990, 36418), (2620, 27661), (2780, 26069), (3980, 18209)]