21151982

素因数分解:

$2^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{53}}^1\times {\mathrm{157}}^1$

素因数の和:284

約数の個数: 32

約数和(自身を含む): 34401024

約数和(自身を除く): 13249042

約数列:

[1, 2, 31, 41, 53, 62, 82, 106, 157, 314, 1271, 1643, 2173, 2542, 3286, 4346, 4867, 6437, 8321, 9734, 12874, 16642, 67363, 134726, 199547, 257951, 341161, 399094, 515902, 682322, 10575991, 21151982]

約数ペア:

[(1, 21151982), (2, 10575991), (31, 682322), (41, 515902), (53, 399094), (62, 341161), (82, 257951), (106, 199547), (157, 134726), (314, 67363), (1271, 16642), (1643, 12874), (2173, 9734), (2542, 8321), (3286, 6437), (4346, 4867)]