12915880

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{101}}^1\times {\mathrm{139}}^1$

素因数の和:274

約数の個数: 64

約数和(自身を含む): 30844800

約数和(自身を除く): 17928920

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 40, 46, 92, 101, 115, 139, 184, 202, 230, 278, 404, 460, 505, 556, 695, 808, 920, 1010, 1112, 1390, 2020, 2323, 2780, 3197, 4040, 4646, 5560, 6394, 9292, 11615, 12788, 14039, 15985, 18584, 23230, 25576, 28078, 31970, 46460, 56156, 63940, 70195, 92920, 112312, 127880, 140390, 280780, 322897, 561560, 645794, 1291588, 1614485, 2583176, 3228970, 6457940, 12915880]

約数ペア:

[(1, 12915880), (2, 6457940), (4, 3228970), (5, 2583176), (8, 1614485), (10, 1291588), (20, 645794), (23, 561560), (40, 322897), (46, 280780), (92, 140390), (101, 127880), (115, 112312), (139, 92920), (184, 70195), (202, 63940), (230, 56156), (278, 46460), (404, 31970), (460, 28078), (505, 25576), (556, 23230), (695, 18584), (808, 15985), (920, 14039), (1010, 12788), (1112, 11615), (1390, 9292), (2020, 6394), (2323, 5560), (2780, 4646), (3197, 4040)]