128344960

素因数分解:

$2^7\times 5^1\times {\mathrm{31}}^1\times {\mathrm{6469}}^1$

素因数の和:6519

約数の個数: 64

約数和(自身を含む): 316771200

約数和(自身を除く): 188426240

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 128, 155, 160, 248, 310, 320, 496, 620, 640, 992, 1240, 1984, 2480, 3968, 4960, 6469, 9920, 12938, 19840, 25876, 32345, 51752, 64690, 103504, 129380, 200539, 207008, 258760, 401078, 414016, 517520, 802156, 828032, 1002695, 1035040, 1604312, 2005390, 2070080, 3208624, 4010780, 4140160, 6417248, 8021560, 12834496, 16043120, 25668992, 32086240, 64172480, 128344960]

約数ペア:

[(1, 128344960), (2, 64172480), (4, 32086240), (5, 25668992), (8, 16043120), (10, 12834496), (16, 8021560), (20, 6417248), (31, 4140160), (32, 4010780), (40, 3208624), (62, 2070080), (64, 2005390), (80, 1604312), (124, 1035040), (128, 1002695), (155, 828032), (160, 802156), (248, 517520), (310, 414016), (320, 401078), (496, 258760), (620, 207008), (640, 200539), (992, 129380), (1240, 103504), (1984, 64690), (2480, 51752), (3968, 32345), (4960, 25876), (6469, 19840), (9920, 12938)]