20271680

素因数分解:

$2^6\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{443}}^1$

素因数の和:484

約数の個数: 112

約数和(自身を含む): 56839104

約数和(自身を除く): 36567424

約数列:

[1, 2, 4, 5, 8, 10, 11, 13, 16, 20, 22, 26, 32, 40, 44, 52, 55, 64, 65, 80, 88, 104, 110, 130, 143, 160, 176, 208, 220, 260, 286, 320, 352, 416, 440, 443, 520, 572, 704, 715, 832, 880, 886, 1040, 1144, 1430, 1760, 1772, 2080, 2215, 2288, 2860, 3520, 3544, 4160, 4430, 4576, 4873, 5720, 5759, 7088, 8860, 9152, 9746, 11440, 11518, 14176, 17720, 19492, 22880, 23036, 24365, 28352, 28795, 35440, 38984, 45760, 46072, 48730, 57590, 63349, 70880, 77968, 92144, 97460, 115180, 126698, 141760, 155936, 184288, 194920, 230360, 253396, 311872, 316745, 368576, 389840, 460720, 506792, 633490, 779680, 921440, 1013584, 1266980, 1559360, 1842880, 2027168, 2533960, 4054336, 5067920, 10135840, 20271680]

約数ペア:

[(1, 20271680), (2, 10135840), (4, 5067920), (5, 4054336), (8, 2533960), (10, 2027168), (11, 1842880), (13, 1559360), (16, 1266980), (20, 1013584), (22, 921440), (26, 779680), (32, 633490), (40, 506792), (44, 460720), (52, 389840), (55, 368576), (64, 316745), (65, 311872), (80, 253396), (88, 230360), (104, 194920), (110, 184288), (130, 155936), (143, 141760), (160, 126698), (176, 115180), (208, 97460), (220, 92144), (260, 77968), (286, 70880), (320, 63349), (352, 57590), (416, 48730), (440, 46072), (443, 45760), (520, 38984), (572, 35440), (704, 28795), (715, 28352), (832, 24365), (880, 23036), (886, 22880), (1040, 19492), (1144, 17720), (1430, 14176), (1760, 11518), (1772, 11440), (2080, 9746), (2215, 9152), (2288, 8860), (2860, 7088), (3520, 5759), (3544, 5720), (4160, 4873), (4430, 4576)]