80870720

素因数分解:

$2^6\times 5^1\times 7^1\times {\mathrm{79}}^1\times {\mathrm{457}}^1$

素因数の和:560

約数の個数: 112

約数和(自身を含む): 223357440

約数和(自身を除く): 142486720

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 64, 70, 79, 80, 112, 140, 158, 160, 224, 280, 316, 320, 395, 448, 457, 553, 560, 632, 790, 914, 1106, 1120, 1264, 1580, 1828, 2212, 2240, 2285, 2528, 2765, 3160, 3199, 3656, 4424, 4570, 5056, 5530, 6320, 6398, 7312, 8848, 9140, 11060, 12640, 12796, 14624, 15995, 17696, 18280, 22120, 25280, 25592, 29248, 31990, 35392, 36103, 36560, 44240, 51184, 63980, 72206, 73120, 88480, 102368, 127960, 144412, 146240, 176960, 180515, 204736, 252721, 255920, 288824, 361030, 505442, 511840, 577648, 722060, 1010884, 1023680, 1155296, 1263605, 1444120, 2021768, 2310592, 2527210, 2888240, 4043536, 5054420, 5776480, 8087072, 10108840, 11552960, 16174144, 20217680, 40435360, 80870720]

約数ペア:

[(1, 80870720), (2, 40435360), (4, 20217680), (5, 16174144), (7, 11552960), (8, 10108840), (10, 8087072), (14, 5776480), (16, 5054420), (20, 4043536), (28, 2888240), (32, 2527210), (35, 2310592), (40, 2021768), (56, 1444120), (64, 1263605), (70, 1155296), (79, 1023680), (80, 1010884), (112, 722060), (140, 577648), (158, 511840), (160, 505442), (224, 361030), (280, 288824), (316, 255920), (320, 252721), (395, 204736), (448, 180515), (457, 176960), (553, 146240), (560, 144412), (632, 127960), (790, 102368), (914, 88480), (1106, 73120), (1120, 72206), (1264, 63980), (1580, 51184), (1828, 44240), (2212, 36560), (2240, 36103), (2285, 35392), (2528, 31990), (2765, 29248), (3160, 25592), (3199, 25280), (3656, 22120), (4424, 18280), (4570, 17696), (5056, 15995), (5530, 14624), (6320, 12796), (6398, 12640), (7312, 11060), (8848, 9140)]