18100480

素因数分解:

$2^8\times 5^1\times {\mathrm{79}}^1\times {\mathrm{179}}^1$

素因数の和:279

約数の個数: 72

約数和(自身を含む): 44150400

約数和(自身を除く): 26049920

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 79, 80, 128, 158, 160, 179, 256, 316, 320, 358, 395, 632, 640, 716, 790, 895, 1264, 1280, 1432, 1580, 1790, 2528, 2864, 3160, 3580, 5056, 5728, 6320, 7160, 10112, 11456, 12640, 14141, 14320, 20224, 22912, 25280, 28282, 28640, 45824, 50560, 56564, 57280, 70705, 101120, 113128, 114560, 141410, 226256, 229120, 282820, 452512, 565640, 905024, 1131280, 1810048, 2262560, 3620096, 4525120, 9050240, 18100480]

約数ペア:

[(1, 18100480), (2, 9050240), (4, 4525120), (5, 3620096), (8, 2262560), (10, 1810048), (16, 1131280), (20, 905024), (32, 565640), (40, 452512), (64, 282820), (79, 229120), (80, 226256), (128, 141410), (158, 114560), (160, 113128), (179, 101120), (256, 70705), (316, 57280), (320, 56564), (358, 50560), (395, 45824), (632, 28640), (640, 28282), (716, 25280), (790, 22912), (895, 20224), (1264, 14320), (1280, 14141), (1432, 12640), (1580, 11456), (1790, 10112), (2528, 7160), (2864, 6320), (3160, 5728), (3580, 5056)]