81609640

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{383}}^1\times {\mathrm{761}}^1$

素因数の和:1162

約数の個数: 64

約数和(自身を含む): 210677760

約数和(自身を除く): 129068120

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 383, 761, 766, 1522, 1532, 1915, 2681, 3044, 3064, 3805, 3830, 5327, 5362, 6088, 7610, 7660, 10654, 10724, 13405, 15220, 15320, 21308, 21448, 26635, 26810, 30440, 42616, 53270, 53620, 106540, 107240, 213080, 291463, 582926, 1165852, 1457315, 2040241, 2331704, 2914630, 4080482, 5829260, 8160964, 10201205, 11658520, 16321928, 20402410, 40804820, 81609640]

約数ペア:

[(1, 81609640), (2, 40804820), (4, 20402410), (5, 16321928), (7, 11658520), (8, 10201205), (10, 8160964), (14, 5829260), (20, 4080482), (28, 2914630), (35, 2331704), (40, 2040241), (56, 1457315), (70, 1165852), (140, 582926), (280, 291463), (383, 213080), (761, 107240), (766, 106540), (1522, 53620), (1532, 53270), (1915, 42616), (2681, 30440), (3044, 26810), (3064, 26635), (3805, 21448), (3830, 21308), (5327, 15320), (5362, 15220), (6088, 13405), (7610, 10724), (7660, 10654)]