209920216

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{140321}}^1$

素因数の和:140355

約数の個数: 32

約数和(自身を含む): 454643280

約数和(自身を除く): 244723064

約数列:

[1, 2, 4, 8, 11, 17, 22, 34, 44, 68, 88, 136, 187, 374, 748, 1496, 140321, 280642, 561284, 1122568, 1543531, 2385457, 3087062, 4770914, 6174124, 9541828, 12348248, 19083656, 26240027, 52480054, 104960108, 209920216]

約数ペア:

[(1, 209920216), (2, 104960108), (4, 52480054), (8, 26240027), (11, 19083656), (17, 12348248), (22, 9541828), (34, 6174124), (44, 4770914), (68, 3087062), (88, 2385457), (136, 1543531), (187, 1122568), (374, 561284), (748, 280642), (1496, 140321)]