21668388

素因数分解:

$2^2\times 3^1\times 7^2\times {\mathrm{43}}^1\times {\mathrm{857}}^1$

素因数の和:921

約数の個数: 72

約数和(自身を含む): 60252192

約数和(自身を除く): 38583804

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 43, 49, 84, 86, 98, 129, 147, 172, 196, 258, 294, 301, 516, 588, 602, 857, 903, 1204, 1714, 1806, 2107, 2571, 3428, 3612, 4214, 5142, 5999, 6321, 8428, 10284, 11998, 12642, 17997, 23996, 25284, 35994, 36851, 41993, 71988, 73702, 83986, 110553, 125979, 147404, 167972, 221106, 251958, 257957, 442212, 503916, 515914, 773871, 1031828, 1547742, 1805699, 3095484, 3611398, 5417097, 7222796, 10834194, 21668388]

約数ペア:

[(1, 21668388), (2, 10834194), (3, 7222796), (4, 5417097), (6, 3611398), (7, 3095484), (12, 1805699), (14, 1547742), (21, 1031828), (28, 773871), (42, 515914), (43, 503916), (49, 442212), (84, 257957), (86, 251958), (98, 221106), (129, 167972), (147, 147404), (172, 125979), (196, 110553), (258, 83986), (294, 73702), (301, 71988), (516, 41993), (588, 36851), (602, 35994), (857, 25284), (903, 23996), (1204, 17997), (1714, 12642), (1806, 11998), (2107, 10284), (2571, 8428), (3428, 6321), (3612, 5999), (4214, 5142)]