64998400

素因数分解:

$2^{10}\times 5^2\times {\mathrm{2539}}^1$

素因数の和:2569

約数の個数: 66

約数和(自身を含む): 161180780

約数和(自身を除く): 96182380

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 128, 160, 200, 256, 320, 400, 512, 640, 800, 1024, 1280, 1600, 2539, 2560, 3200, 5078, 5120, 6400, 10156, 12695, 12800, 20312, 25390, 25600, 40624, 50780, 63475, 81248, 101560, 126950, 162496, 203120, 253900, 324992, 406240, 507800, 649984, 812480, 1015600, 1299968, 1624960, 2031200, 2599936, 3249920, 4062400, 6499840, 8124800, 12999680, 16249600, 32499200, 64998400]

約数ペア:

[(1, 64998400), (2, 32499200), (4, 16249600), (5, 12999680), (8, 8124800), (10, 6499840), (16, 4062400), (20, 3249920), (25, 2599936), (32, 2031200), (40, 1624960), (50, 1299968), (64, 1015600), (80, 812480), (100, 649984), (128, 507800), (160, 406240), (200, 324992), (256, 253900), (320, 203120), (400, 162496), (512, 126950), (640, 101560), (800, 81248), (1024, 63475), (1280, 50780), (1600, 40624), (2539, 25600), (2560, 25390), (3200, 20312), (5078, 12800), (5120, 12695), (6400, 10156)]