278300240

素因数分解:

$2^4\times 5^1\times {\mathrm{29}}^1\times {\mathrm{139}}^1\times {\mathrm{863}}^1$

素因数の和:1044

約数の個数: 80

約数和(自身を含む): 674956800

約数和(自身を除く): 396656560

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 40, 58, 80, 116, 139, 145, 232, 278, 290, 464, 556, 580, 695, 863, 1112, 1160, 1390, 1726, 2224, 2320, 2780, 3452, 4031, 4315, 5560, 6904, 8062, 8630, 11120, 13808, 16124, 17260, 20155, 25027, 32248, 34520, 40310, 50054, 64496, 69040, 80620, 100108, 119957, 125135, 161240, 200216, 239914, 250270, 322480, 400432, 479828, 500540, 599785, 959656, 1001080, 1199570, 1919312, 2002160, 2399140, 3478753, 4798280, 6957506, 9596560, 13915012, 17393765, 27830024, 34787530, 55660048, 69575060, 139150120, 278300240]

約数ペア:

[(1, 278300240), (2, 139150120), (4, 69575060), (5, 55660048), (8, 34787530), (10, 27830024), (16, 17393765), (20, 13915012), (29, 9596560), (40, 6957506), (58, 4798280), (80, 3478753), (116, 2399140), (139, 2002160), (145, 1919312), (232, 1199570), (278, 1001080), (290, 959656), (464, 599785), (556, 500540), (580, 479828), (695, 400432), (863, 322480), (1112, 250270), (1160, 239914), (1390, 200216), (1726, 161240), (2224, 125135), (2320, 119957), (2780, 100108), (3452, 80620), (4031, 69040), (4315, 64496), (5560, 50054), (6904, 40310), (8062, 34520), (8630, 32248), (11120, 25027), (13808, 20155), (16124, 17260)]