20118280720

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{173}}^1\times {\mathrm{76507}}^1$

素因数の和:76712

約数の個数: 80

約数和(自身を含む): 49522098240

約数和(自身を除く): 29403817520

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 173, 190, 304, 346, 380, 692, 760, 865, 1384, 1520, 1730, 2768, 3287, 3460, 6574, 6920, 13148, 13840, 16435, 26296, 32870, 52592, 65740, 76507, 131480, 153014, 262960, 306028, 382535, 612056, 765070, 1224112, 1453633, 1530140, 2907266, 3060280, 5814532, 6120560, 7268165, 11629064, 13235711, 14536330, 23258128, 26471422, 29072660, 52942844, 58145320, 66178555, 105885688, 116290640, 132357110, 211771376, 251478509, 264714220, 502957018, 529428440, 1005914036, 1058856880, 1257392545, 2011828072, 2514785090, 4023656144, 5029570180, 10059140360, 20118280720]

約数ペア:

[(1, 20118280720), (2, 10059140360), (4, 5029570180), (5, 4023656144), (8, 2514785090), (10, 2011828072), (16, 1257392545), (19, 1058856880), (20, 1005914036), (38, 529428440), (40, 502957018), (76, 264714220), (80, 251478509), (95, 211771376), (152, 132357110), (173, 116290640), (190, 105885688), (304, 66178555), (346, 58145320), (380, 52942844), (692, 29072660), (760, 26471422), (865, 23258128), (1384, 14536330), (1520, 13235711), (1730, 11629064), (2768, 7268165), (3287, 6120560), (3460, 5814532), (6574, 3060280), (6920, 2907266), (13148, 1530140), (13840, 1453633), (16435, 1224112), (26296, 765070), (32870, 612056), (52592, 382535), (65740, 306028), (76507, 262960), (131480, 153014)]