28223440

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{101}}^1\times {\mathrm{499}}^1$

素因数の和:620

約数の個数: 80

約数和(自身を含む): 75888000

約数和(自身を除く): 47664560

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 101, 112, 140, 202, 280, 404, 499, 505, 560, 707, 808, 998, 1010, 1414, 1616, 1996, 2020, 2495, 2828, 3493, 3535, 3992, 4040, 4990, 5656, 6986, 7070, 7984, 8080, 9980, 11312, 13972, 14140, 17465, 19960, 27944, 28280, 34930, 39920, 50399, 55888, 56560, 69860, 100798, 139720, 201596, 251995, 279440, 352793, 403192, 503990, 705586, 806384, 1007980, 1411172, 1763965, 2015960, 2822344, 3527930, 4031920, 5644688, 7055860, 14111720, 28223440]

約数ペア:

[(1, 28223440), (2, 14111720), (4, 7055860), (5, 5644688), (7, 4031920), (8, 3527930), (10, 2822344), (14, 2015960), (16, 1763965), (20, 1411172), (28, 1007980), (35, 806384), (40, 705586), (56, 503990), (70, 403192), (80, 352793), (101, 279440), (112, 251995), (140, 201596), (202, 139720), (280, 100798), (404, 69860), (499, 56560), (505, 55888), (560, 50399), (707, 39920), (808, 34930), (998, 28280), (1010, 27944), (1414, 19960), (1616, 17465), (1996, 14140), (2020, 13972), (2495, 11312), (2828, 9980), (3493, 8080), (3535, 7984), (3992, 7070), (4040, 6986), (4990, 5656)]