8399440

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{283}}^1$

素因数の和:356

約数の個数: 80

約数和(自身を含む): 22819968

約数和(自身を除く): 14420528

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 53, 56, 70, 80, 106, 112, 140, 212, 265, 280, 283, 371, 424, 530, 560, 566, 742, 848, 1060, 1132, 1415, 1484, 1855, 1981, 2120, 2264, 2830, 2968, 3710, 3962, 4240, 4528, 5660, 5936, 7420, 7924, 9905, 11320, 14840, 14999, 15848, 19810, 22640, 29680, 29998, 31696, 39620, 59996, 74995, 79240, 104993, 119992, 149990, 158480, 209986, 239984, 299980, 419972, 524965, 599960, 839944, 1049930, 1199920, 1679888, 2099860, 4199720, 8399440]

約数ペア:

[(1, 8399440), (2, 4199720), (4, 2099860), (5, 1679888), (7, 1199920), (8, 1049930), (10, 839944), (14, 599960), (16, 524965), (20, 419972), (28, 299980), (35, 239984), (40, 209986), (53, 158480), (56, 149990), (70, 119992), (80, 104993), (106, 79240), (112, 74995), (140, 59996), (212, 39620), (265, 31696), (280, 29998), (283, 29680), (371, 22640), (424, 19810), (530, 15848), (560, 14999), (566, 14840), (742, 11320), (848, 9905), (1060, 7924), (1132, 7420), (1415, 5936), (1484, 5660), (1855, 4528), (1981, 4240), (2120, 3962), (2264, 3710), (2830, 2968)]