21417440

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{283}}^1$

素因数の和:352

約数の個数: 96

約数和(自身を含む): 56681856

約数和(自身を除く): 35264416

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 43, 44, 55, 80, 86, 88, 110, 160, 172, 176, 215, 220, 283, 344, 352, 430, 440, 473, 566, 688, 860, 880, 946, 1132, 1376, 1415, 1720, 1760, 1892, 2264, 2365, 2830, 3113, 3440, 3784, 4528, 4730, 5660, 6226, 6880, 7568, 9056, 9460, 11320, 12169, 12452, 15136, 15565, 18920, 22640, 24338, 24904, 31130, 37840, 45280, 48676, 49808, 60845, 62260, 75680, 97352, 99616, 121690, 124520, 133859, 194704, 243380, 249040, 267718, 389408, 486760, 498080, 535436, 669295, 973520, 1070872, 1338590, 1947040, 2141744, 2677180, 4283488, 5354360, 10708720, 21417440]

約数ペア:

[(1, 21417440), (2, 10708720), (4, 5354360), (5, 4283488), (8, 2677180), (10, 2141744), (11, 1947040), (16, 1338590), (20, 1070872), (22, 973520), (32, 669295), (40, 535436), (43, 498080), (44, 486760), (55, 389408), (80, 267718), (86, 249040), (88, 243380), (110, 194704), (160, 133859), (172, 124520), (176, 121690), (215, 99616), (220, 97352), (283, 75680), (344, 62260), (352, 60845), (430, 49808), (440, 48676), (473, 45280), (566, 37840), (688, 31130), (860, 24904), (880, 24338), (946, 22640), (1132, 18920), (1376, 15565), (1415, 15136), (1720, 12452), (1760, 12169), (1892, 11320), (2264, 9460), (2365, 9056), (2830, 7568), (3113, 6880), (3440, 6226), (3784, 5660), (4528, 4730)]