81089720

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{4639}}^1$

素因数の和:4692

約数の個数: 64

約数和(自身を含む): 200448000

約数和(自身を除く): 119358280

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 23, 38, 40, 46, 76, 92, 95, 115, 152, 184, 190, 230, 380, 437, 460, 760, 874, 920, 1748, 2185, 3496, 4370, 4639, 8740, 9278, 17480, 18556, 23195, 37112, 46390, 88141, 92780, 106697, 176282, 185560, 213394, 352564, 426788, 440705, 533485, 705128, 853576, 881410, 1066970, 1762820, 2027243, 2133940, 3525640, 4054486, 4267880, 8108972, 10136215, 16217944, 20272430, 40544860, 81089720]

約数ペア:

[(1, 81089720), (2, 40544860), (4, 20272430), (5, 16217944), (8, 10136215), (10, 8108972), (19, 4267880), (20, 4054486), (23, 3525640), (38, 2133940), (40, 2027243), (46, 1762820), (76, 1066970), (92, 881410), (95, 853576), (115, 705128), (152, 533485), (184, 440705), (190, 426788), (230, 352564), (380, 213394), (437, 185560), (460, 176282), (760, 106697), (874, 92780), (920, 88141), (1748, 46390), (2185, 37112), (3496, 23195), (4370, 18556), (4639, 17480), (8740, 9278)]