81421760

素因数分解:

$2^6\times 5^1\times 7^1\times {\mathrm{163}}^1\times {\mathrm{223}}^1$

素因数の和:410

約数の個数: 112

約数和(自身を含む): 223942656

約数和(自身を除く): 142520896

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 64, 70, 80, 112, 140, 160, 163, 223, 224, 280, 320, 326, 446, 448, 560, 652, 815, 892, 1115, 1120, 1141, 1304, 1561, 1630, 1784, 2230, 2240, 2282, 2608, 3122, 3260, 3568, 4460, 4564, 5216, 5705, 6244, 6520, 7136, 7805, 8920, 9128, 10432, 11410, 12488, 13040, 14272, 15610, 17840, 18256, 22820, 24976, 26080, 31220, 35680, 36349, 36512, 45640, 49952, 52160, 62440, 71360, 72698, 73024, 91280, 99904, 124880, 145396, 181745, 182560, 249760, 254443, 290792, 363490, 365120, 499520, 508886, 581584, 726980, 1017772, 1163168, 1272215, 1453960, 2035544, 2326336, 2544430, 2907920, 4071088, 5088860, 5815840, 8142176, 10177720, 11631680, 16284352, 20355440, 40710880, 81421760]

約数ペア:

[(1, 81421760), (2, 40710880), (4, 20355440), (5, 16284352), (7, 11631680), (8, 10177720), (10, 8142176), (14, 5815840), (16, 5088860), (20, 4071088), (28, 2907920), (32, 2544430), (35, 2326336), (40, 2035544), (56, 1453960), (64, 1272215), (70, 1163168), (80, 1017772), (112, 726980), (140, 581584), (160, 508886), (163, 499520), (223, 365120), (224, 363490), (280, 290792), (320, 254443), (326, 249760), (446, 182560), (448, 181745), (560, 145396), (652, 124880), (815, 99904), (892, 91280), (1115, 73024), (1120, 72698), (1141, 71360), (1304, 62440), (1561, 52160), (1630, 49952), (1784, 45640), (2230, 36512), (2240, 36349), (2282, 35680), (2608, 31220), (3122, 26080), (3260, 24976), (3568, 22820), (4460, 18256), (4564, 17840), (5216, 15610), (5705, 14272), (6244, 13040), (6520, 12488), (7136, 11410), (7805, 10432), (8920, 9128)]