128371840

素因数分解:

$2^7\times 5^1\times {\mathrm{79}}^1\times {\mathrm{2539}}^1$

素因数の和:2637

約数の個数: 64

約数和(自身を含む): 310896000

約数和(自身を除く): 182524160

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 79, 80, 128, 158, 160, 316, 320, 395, 632, 640, 790, 1264, 1580, 2528, 2539, 3160, 5056, 5078, 6320, 10112, 10156, 12640, 12695, 20312, 25280, 25390, 40624, 50560, 50780, 81248, 101560, 162496, 200581, 203120, 324992, 401162, 406240, 802324, 812480, 1002905, 1604648, 1624960, 2005810, 3209296, 4011620, 6418592, 8023240, 12837184, 16046480, 25674368, 32092960, 64185920, 128371840]

約数ペア:

[(1, 128371840), (2, 64185920), (4, 32092960), (5, 25674368), (8, 16046480), (10, 12837184), (16, 8023240), (20, 6418592), (32, 4011620), (40, 3209296), (64, 2005810), (79, 1624960), (80, 1604648), (128, 1002905), (158, 812480), (160, 802324), (316, 406240), (320, 401162), (395, 324992), (632, 203120), (640, 200581), (790, 162496), (1264, 101560), (1580, 81248), (2528, 50780), (2539, 50560), (3160, 40624), (5056, 25390), (5078, 25280), (6320, 20312), (10112, 12695), (10156, 12640)]