81302480

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{3089}}^1$

素因数の和:3156

約数の個数: 80

約数和(自身を含む): 220700160

約数和(自身を除く): 139397680

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 47, 56, 70, 80, 94, 112, 140, 188, 235, 280, 329, 376, 470, 560, 658, 752, 940, 1316, 1645, 1880, 2632, 3089, 3290, 3760, 5264, 6178, 6580, 12356, 13160, 15445, 21623, 24712, 26320, 30890, 43246, 49424, 61780, 86492, 108115, 123560, 145183, 172984, 216230, 247120, 290366, 345968, 432460, 580732, 725915, 864920, 1016281, 1161464, 1451830, 1729840, 2032562, 2322928, 2903660, 4065124, 5081405, 5807320, 8130248, 10162810, 11614640, 16260496, 20325620, 40651240, 81302480]

約数ペア:

[(1, 81302480), (2, 40651240), (4, 20325620), (5, 16260496), (7, 11614640), (8, 10162810), (10, 8130248), (14, 5807320), (16, 5081405), (20, 4065124), (28, 2903660), (35, 2322928), (40, 2032562), (47, 1729840), (56, 1451830), (70, 1161464), (80, 1016281), (94, 864920), (112, 725915), (140, 580732), (188, 432460), (235, 345968), (280, 290366), (329, 247120), (376, 216230), (470, 172984), (560, 145183), (658, 123560), (752, 108115), (940, 86492), (1316, 61780), (1645, 49424), (1880, 43246), (2632, 30890), (3089, 26320), (3290, 24712), (3760, 21623), (5264, 15445), (6178, 13160), (6580, 12356)]