15875840

素因数分解:

$2^8\times 5^1\times {\mathrm{79}}^1\times {\mathrm{157}}^1$

素因数の和:257

約数の個数: 72

約数和(自身を含む): 38754240

約数和(自身を除く): 22878400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 79, 80, 128, 157, 158, 160, 256, 314, 316, 320, 395, 628, 632, 640, 785, 790, 1256, 1264, 1280, 1570, 1580, 2512, 2528, 3140, 3160, 5024, 5056, 6280, 6320, 10048, 10112, 12403, 12560, 12640, 20096, 20224, 24806, 25120, 25280, 40192, 49612, 50240, 50560, 62015, 99224, 100480, 101120, 124030, 198448, 200960, 248060, 396896, 496120, 793792, 992240, 1587584, 1984480, 3175168, 3968960, 7937920, 15875840]

約数ペア:

[(1, 15875840), (2, 7937920), (4, 3968960), (5, 3175168), (8, 1984480), (10, 1587584), (16, 992240), (20, 793792), (32, 496120), (40, 396896), (64, 248060), (79, 200960), (80, 198448), (128, 124030), (157, 101120), (158, 100480), (160, 99224), (256, 62015), (314, 50560), (316, 50240), (320, 49612), (395, 40192), (628, 25280), (632, 25120), (640, 24806), (785, 20224), (790, 20096), (1256, 12640), (1264, 12560), (1280, 12403), (1570, 10112), (1580, 10048), (2512, 6320), (2528, 6280), (3140, 5056), (3160, 5024)]