21256416

素因数分解:

$2^5\times 3^2\times {\mathrm{23}}^1\times {\mathrm{3209}}^1$

素因数の和:3248

約数の個数: 72

約数和(自身を含む): 63095760

約数和(自身を除く): 41839344

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 23, 24, 32, 36, 46, 48, 69, 72, 92, 96, 138, 144, 184, 207, 276, 288, 368, 414, 552, 736, 828, 1104, 1656, 2208, 3209, 3312, 6418, 6624, 9627, 12836, 19254, 25672, 28881, 38508, 51344, 57762, 73807, 77016, 102688, 115524, 147614, 154032, 221421, 231048, 295228, 308064, 442842, 462096, 590456, 664263, 885684, 924192, 1180912, 1328526, 1771368, 2361824, 2657052, 3542736, 5314104, 7085472, 10628208, 21256416]

約数ペア:

[(1, 21256416), (2, 10628208), (3, 7085472), (4, 5314104), (6, 3542736), (8, 2657052), (9, 2361824), (12, 1771368), (16, 1328526), (18, 1180912), (23, 924192), (24, 885684), (32, 664263), (36, 590456), (46, 462096), (48, 442842), (69, 308064), (72, 295228), (92, 231048), (96, 221421), (138, 154032), (144, 147614), (184, 115524), (207, 102688), (276, 77016), (288, 73807), (368, 57762), (414, 51344), (552, 38508), (736, 28881), (828, 25672), (1104, 19254), (1656, 12836), (2208, 9627), (3209, 6624), (3312, 6418)]