80919440

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{229}}^1\times {\mathrm{631}}^1$

素因数の和:880

約数の個数: 80

約数和(自身を含む): 216295680

約数和(自身を除く): 135376240

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 229, 280, 458, 560, 631, 916, 1145, 1262, 1603, 1832, 2290, 2524, 3155, 3206, 3664, 4417, 4580, 5048, 6310, 6412, 8015, 8834, 9160, 10096, 12620, 12824, 16030, 17668, 18320, 22085, 25240, 25648, 32060, 35336, 44170, 50480, 64120, 70672, 88340, 128240, 144499, 176680, 288998, 353360, 577996, 722495, 1011493, 1155992, 1444990, 2022986, 2311984, 2889980, 4045972, 5057465, 5779960, 8091944, 10114930, 11559920, 16183888, 20229860, 40459720, 80919440]

約数ペア:

[(1, 80919440), (2, 40459720), (4, 20229860), (5, 16183888), (7, 11559920), (8, 10114930), (10, 8091944), (14, 5779960), (16, 5057465), (20, 4045972), (28, 2889980), (35, 2311984), (40, 2022986), (56, 1444990), (70, 1155992), (80, 1011493), (112, 722495), (140, 577996), (229, 353360), (280, 288998), (458, 176680), (560, 144499), (631, 128240), (916, 88340), (1145, 70672), (1262, 64120), (1603, 50480), (1832, 44170), (2290, 35336), (2524, 32060), (3155, 25648), (3206, 25240), (3664, 22085), (4417, 18320), (4580, 17668), (5048, 16030), (6310, 12824), (6412, 12620), (8015, 10096), (8834, 9160)]