81004240

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{89}}^1\times {\mathrm{367}}^1$

素因数の和:500

約数の個数: 80

約数和(自身を含む): 197130240

約数和(自身を除く): 116126000

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 89, 124, 155, 178, 248, 310, 356, 367, 445, 496, 620, 712, 734, 890, 1240, 1424, 1468, 1780, 1835, 2480, 2759, 2936, 3560, 3670, 5518, 5872, 7120, 7340, 11036, 11377, 13795, 14680, 22072, 22754, 27590, 29360, 32663, 44144, 45508, 55180, 56885, 65326, 91016, 110360, 113770, 130652, 163315, 182032, 220720, 227540, 261304, 326630, 455080, 522608, 653260, 910160, 1012553, 1306520, 2025106, 2613040, 4050212, 5062765, 8100424, 10125530, 16200848, 20251060, 40502120, 81004240]

約数ペア:

[(1, 81004240), (2, 40502120), (4, 20251060), (5, 16200848), (8, 10125530), (10, 8100424), (16, 5062765), (20, 4050212), (31, 2613040), (40, 2025106), (62, 1306520), (80, 1012553), (89, 910160), (124, 653260), (155, 522608), (178, 455080), (248, 326630), (310, 261304), (356, 227540), (367, 220720), (445, 182032), (496, 163315), (620, 130652), (712, 113770), (734, 110360), (890, 91016), (1240, 65326), (1424, 56885), (1468, 55180), (1780, 45508), (1835, 44144), (2480, 32663), (2759, 29360), (2936, 27590), (3560, 22754), (3670, 22072), (5518, 14680), (5872, 13795), (7120, 11377), (7340, 11036)]