640288

素因数分解:

$2^5\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{107}}^1$

素因数の和:145

約数の個数: 48

約数和(自身を含む): 1469664

約数和(自身を除く): 829376

約数列:

[1, 2, 4, 8, 11, 16, 17, 22, 32, 34, 44, 68, 88, 107, 136, 176, 187, 214, 272, 352, 374, 428, 544, 748, 856, 1177, 1496, 1712, 1819, 2354, 2992, 3424, 3638, 4708, 5984, 7276, 9416, 14552, 18832, 20009, 29104, 37664, 40018, 58208, 80036, 160072, 320144, 640288]

約数ペア:

[(1, 640288), (2, 320144), (4, 160072), (8, 80036), (11, 58208), (16, 40018), (17, 37664), (22, 29104), (32, 20009), (34, 18832), (44, 14552), (68, 9416), (88, 7276), (107, 5984), (136, 4708), (176, 3638), (187, 3424), (214, 2992), (272, 2354), (352, 1819), (374, 1712), (428, 1496), (544, 1177), (748, 856)]