20898746

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{17}}^2\times {\mathrm{19}}^1\times {\mathrm{173}}^1$

素因数の和:239

約数の個数: 48

約数和(自身を含む): 38460960

約数和(自身を除く): 17562214

約数列:

[1, 2, 11, 17, 19, 22, 34, 38, 173, 187, 209, 289, 323, 346, 374, 418, 578, 646, 1903, 2941, 3179, 3287, 3553, 3806, 5491, 5882, 6358, 6574, 7106, 10982, 32351, 36157, 49997, 55879, 60401, 64702, 72314, 99994, 111758, 120802, 549967, 614669, 949943, 1099934, 1229338, 1899886, 10449373, 20898746]

約数ペア:

[(1, 20898746), (2, 10449373), (11, 1899886), (17, 1229338), (19, 1099934), (22, 949943), (34, 614669), (38, 549967), (173, 120802), (187, 111758), (209, 99994), (289, 72314), (323, 64702), (346, 60401), (374, 55879), (418, 49997), (578, 36157), (646, 32351), (1903, 10982), (2941, 7106), (3179, 6574), (3287, 6358), (3553, 5882), (3806, 5491)]