7917440

素因数分解:

$2^7\times 5^1\times {\mathrm{89}}^1\times {\mathrm{139}}^1$

素因数の和:247

約数の個数: 64

約数和(自身を含む): 19278000

約数和(自身を除く): 11360560

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 89, 128, 139, 160, 178, 278, 320, 356, 445, 556, 640, 695, 712, 890, 1112, 1390, 1424, 1780, 2224, 2780, 2848, 3560, 4448, 5560, 5696, 7120, 8896, 11120, 11392, 12371, 14240, 17792, 22240, 24742, 28480, 44480, 49484, 56960, 61855, 88960, 98968, 123710, 197936, 247420, 395872, 494840, 791744, 989680, 1583488, 1979360, 3958720, 7917440]

約数ペア:

[(1, 7917440), (2, 3958720), (4, 1979360), (5, 1583488), (8, 989680), (10, 791744), (16, 494840), (20, 395872), (32, 247420), (40, 197936), (64, 123710), (80, 98968), (89, 88960), (128, 61855), (139, 56960), (160, 49484), (178, 44480), (278, 28480), (320, 24742), (356, 22240), (445, 17792), (556, 14240), (640, 12371), (695, 11392), (712, 11120), (890, 8896), (1112, 7120), (1390, 5696), (1424, 5560), (1780, 4448), (2224, 3560), (2780, 2848)]