644960

素因数分解:

$2^5\times 5^1\times {\mathrm{29}}^1\times {\mathrm{139}}^1$

素因数の和:183

約数の個数: 48

約数和(自身を含む): 1587600

約数和(自身を除く): 942640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 32, 40, 58, 80, 116, 139, 145, 160, 232, 278, 290, 464, 556, 580, 695, 928, 1112, 1160, 1390, 2224, 2320, 2780, 4031, 4448, 4640, 5560, 8062, 11120, 16124, 20155, 22240, 32248, 40310, 64496, 80620, 128992, 161240, 322480, 644960]

約数ペア:

[(1, 644960), (2, 322480), (4, 161240), (5, 128992), (8, 80620), (10, 64496), (16, 40310), (20, 32248), (29, 22240), (32, 20155), (40, 16124), (58, 11120), (80, 8062), (116, 5560), (139, 4640), (145, 4448), (160, 4031), (232, 2780), (278, 2320), (290, 2224), (464, 1390), (556, 1160), (580, 1112), (695, 928)]