28310920

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{37}}^2\times {\mathrm{47}}^1$

素因数の和:143

約数の個数: 96

約数和(自身を含む): 72938880

約数和(自身を除く): 44627960

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 37, 40, 44, 47, 55, 74, 88, 94, 110, 148, 185, 188, 220, 235, 296, 370, 376, 407, 440, 470, 517, 740, 814, 940, 1034, 1369, 1480, 1628, 1739, 1880, 2035, 2068, 2585, 2738, 3256, 3478, 4070, 4136, 5170, 5476, 6845, 6956, 8140, 8695, 10340, 10952, 13690, 13912, 15059, 16280, 17390, 19129, 20680, 27380, 30118, 34780, 38258, 54760, 60236, 64343, 69560, 75295, 76516, 95645, 120472, 128686, 150590, 153032, 191290, 257372, 301180, 321715, 382580, 514744, 602360, 643430, 707773, 765160, 1286860, 1415546, 2573720, 2831092, 3538865, 5662184, 7077730, 14155460, 28310920]

約数ペア:

[(1, 28310920), (2, 14155460), (4, 7077730), (5, 5662184), (8, 3538865), (10, 2831092), (11, 2573720), (20, 1415546), (22, 1286860), (37, 765160), (40, 707773), (44, 643430), (47, 602360), (55, 514744), (74, 382580), (88, 321715), (94, 301180), (110, 257372), (148, 191290), (185, 153032), (188, 150590), (220, 128686), (235, 120472), (296, 95645), (370, 76516), (376, 75295), (407, 69560), (440, 64343), (470, 60236), (517, 54760), (740, 38258), (814, 34780), (940, 30118), (1034, 27380), (1369, 20680), (1480, 19129), (1628, 17390), (1739, 16280), (1880, 15059), (2035, 13912), (2068, 13690), (2585, 10952), (2738, 10340), (3256, 8695), (3478, 8140), (4070, 6956), (4136, 6845), (5170, 5476)]