80971540

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{443}}^1$

素因数の和:521

約数の個数: 96

約数和(自身を含む): 198414720

約数和(自身を除く): 117443180

約数列:

[1, 2, 4, 5, 10, 13, 19, 20, 26, 37, 38, 52, 65, 74, 76, 95, 130, 148, 185, 190, 247, 260, 370, 380, 443, 481, 494, 703, 740, 886, 962, 988, 1235, 1406, 1772, 1924, 2215, 2405, 2470, 2812, 3515, 4430, 4810, 4940, 5759, 7030, 8417, 8860, 9139, 9620, 11518, 14060, 16391, 16834, 18278, 23036, 28795, 32782, 33668, 36556, 42085, 45695, 57590, 65564, 81955, 84170, 91390, 109421, 115180, 163910, 168340, 182780, 213083, 218842, 311429, 327820, 426166, 437684, 547105, 622858, 852332, 1065415, 1094210, 1245716, 1557145, 2130830, 2188420, 3114290, 4048577, 4261660, 6228580, 8097154, 16194308, 20242885, 40485770, 80971540]

約数ペア:

[(1, 80971540), (2, 40485770), (4, 20242885), (5, 16194308), (10, 8097154), (13, 6228580), (19, 4261660), (20, 4048577), (26, 3114290), (37, 2188420), (38, 2130830), (52, 1557145), (65, 1245716), (74, 1094210), (76, 1065415), (95, 852332), (130, 622858), (148, 547105), (185, 437684), (190, 426166), (247, 327820), (260, 311429), (370, 218842), (380, 213083), (443, 182780), (481, 168340), (494, 163910), (703, 115180), (740, 109421), (886, 91390), (962, 84170), (988, 81955), (1235, 65564), (1406, 57590), (1772, 45695), (1924, 42085), (2215, 36556), (2405, 33668), (2470, 32782), (2812, 28795), (3515, 23036), (4430, 18278), (4810, 16834), (4940, 16391), (5759, 14060), (7030, 11518), (8417, 9620), (8860, 9139)]