20965455

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{113}}^1$

素因数の和:181

約数の個数: 96

約数和(自身を含む): 45527040

約数和(自身を除く): 24561585

約数列:

[1, 3, 5, 7, 9, 15, 19, 21, 31, 35, 45, 57, 63, 93, 95, 105, 113, 133, 155, 171, 217, 279, 285, 315, 339, 399, 465, 565, 589, 651, 665, 791, 855, 1017, 1085, 1197, 1395, 1695, 1767, 1953, 1995, 2147, 2373, 2945, 3255, 3503, 3955, 4123, 5085, 5301, 5985, 6441, 7119, 8835, 9765, 10509, 10735, 11865, 12369, 15029, 17515, 19323, 20615, 24521, 26505, 31527, 32205, 35595, 37107, 45087, 52545, 61845, 66557, 73563, 75145, 96615, 122605, 135261, 157635, 185535, 199671, 220689, 225435, 332785, 367815, 465899, 599013, 676305, 998355, 1103445, 1397697, 2329495, 2995065, 4193091, 6988485, 20965455]

約数ペア:

[(1, 20965455), (3, 6988485), (5, 4193091), (7, 2995065), (9, 2329495), (15, 1397697), (19, 1103445), (21, 998355), (31, 676305), (35, 599013), (45, 465899), (57, 367815), (63, 332785), (93, 225435), (95, 220689), (105, 199671), (113, 185535), (133, 157635), (155, 135261), (171, 122605), (217, 96615), (279, 75145), (285, 73563), (315, 66557), (339, 61845), (399, 52545), (465, 45087), (565, 37107), (589, 35595), (651, 32205), (665, 31527), (791, 26505), (855, 24521), (1017, 20615), (1085, 19323), (1197, 17515), (1395, 15029), (1695, 12369), (1767, 11865), (1953, 10735), (1995, 10509), (2147, 9765), (2373, 8835), (2945, 7119), (3255, 6441), (3503, 5985), (3955, 5301), (4123, 5085)]