20170020

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{1361}}^1$

素因数の和:1405

約数の個数: 96

約数和(自身を含む): 64068480

約数和(自身を除く): 43898460

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 19, 20, 26, 30, 38, 39, 52, 57, 60, 65, 76, 78, 95, 114, 130, 156, 190, 195, 228, 247, 260, 285, 380, 390, 494, 570, 741, 780, 988, 1140, 1235, 1361, 1482, 2470, 2722, 2964, 3705, 4083, 4940, 5444, 6805, 7410, 8166, 13610, 14820, 16332, 17693, 20415, 25859, 27220, 35386, 40830, 51718, 53079, 70772, 77577, 81660, 88465, 103436, 106158, 129295, 155154, 176930, 212316, 258590, 265395, 310308, 336167, 353860, 387885, 517180, 530790, 672334, 775770, 1008501, 1061580, 1344668, 1551540, 1680835, 2017002, 3361670, 4034004, 5042505, 6723340, 10085010, 20170020]

約数ペア:

[(1, 20170020), (2, 10085010), (3, 6723340), (4, 5042505), (5, 4034004), (6, 3361670), (10, 2017002), (12, 1680835), (13, 1551540), (15, 1344668), (19, 1061580), (20, 1008501), (26, 775770), (30, 672334), (38, 530790), (39, 517180), (52, 387885), (57, 353860), (60, 336167), (65, 310308), (76, 265395), (78, 258590), (95, 212316), (114, 176930), (130, 155154), (156, 129295), (190, 106158), (195, 103436), (228, 88465), (247, 81660), (260, 77577), (285, 70772), (380, 53079), (390, 51718), (494, 40830), (570, 35386), (741, 27220), (780, 25859), (988, 20415), (1140, 17693), (1235, 16332), (1361, 14820), (1482, 13610), (2470, 8166), (2722, 7410), (2964, 6805), (3705, 5444), (4083, 4940)]