81996800

素因数分解:

$2^{10}\times 5^2\times {\mathrm{3203}}^1$

素因数の和:3233

約数の個数: 66

約数和(自身を含む): 203316228

約数和(自身を除く): 121319428

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, 2560, 3200, 3203, 5120, 6400, 6406, 12800, 12812, 16015, 25600, 25624, 32030, 51248, 64060, 80075, 102496, 128120, 160150, 204992, 256240, 320300, 409984, 512480, 640600, 819968, 1024960, 1281200, 1639936, 2049920, 2562400, 3279872, 4099840, 5124800, 8199680, 10249600, 16399360, 20499200, 40998400, 81996800]

約数ペア:

[(1, 81996800), (2, 40998400), (4, 20499200), (5, 16399360), (8, 10249600), (10, 8199680), (16, 5124800), (20, 4099840), (25, 3279872), (32, 2562400), (40, 2049920), (50, 1639936), (64, 1281200), (80, 1024960), (100, 819968), (128, 640600), (160, 512480), (200, 409984), (256, 320300), (320, 256240), (400, 204992), (512, 160150), (640, 128120), (800, 102496), (1024, 80075), (1280, 64060), (1600, 51248), (2560, 32030), (3200, 25624), (3203, 25600), (5120, 16015), (6400, 12812), (6406, 12800)]