21203072

素因数分解:

$2^7\times {\mathrm{11}}^2\times {\mathrm{37}}^2$

素因数の和:110

約数の個数: 72

約数和(自身を含む): 47718405

約数和(自身を除く): 26515333

約数列:

[1, 2, 4, 8, 11, 16, 22, 32, 37, 44, 64, 74, 88, 121, 128, 148, 176, 242, 296, 352, 407, 484, 592, 704, 814, 968, 1184, 1369, 1408, 1628, 1936, 2368, 2738, 3256, 3872, 4477, 4736, 5476, 6512, 7744, 8954, 10952, 13024, 15059, 15488, 17908, 21904, 26048, 30118, 35816, 43808, 52096, 60236, 71632, 87616, 120472, 143264, 165649, 175232, 240944, 286528, 331298, 481888, 573056, 662596, 963776, 1325192, 1927552, 2650384, 5300768, 10601536, 21203072]

約数ペア:

[(1, 21203072), (2, 10601536), (4, 5300768), (8, 2650384), (11, 1927552), (16, 1325192), (22, 963776), (32, 662596), (37, 573056), (44, 481888), (64, 331298), (74, 286528), (88, 240944), (121, 175232), (128, 165649), (148, 143264), (176, 120472), (242, 87616), (296, 71632), (352, 60236), (407, 52096), (484, 43808), (592, 35816), (704, 30118), (814, 26048), (968, 21904), (1184, 17908), (1369, 15488), (1408, 15059), (1628, 13024), (1936, 10952), (2368, 8954), (2738, 7744), (3256, 6512), (3872, 5476), (4477, 4736)]