21205392

素因数分解:

$2^4\times 3^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{1999}}^1$

素因数の和:2040

約数の個数: 80

約数和(自身を含む): 62496000

約数和(自身を除く): 41290608

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 16, 17, 24, 26, 34, 39, 48, 51, 52, 68, 78, 102, 104, 136, 156, 204, 208, 221, 272, 312, 408, 442, 624, 663, 816, 884, 1326, 1768, 1999, 2652, 3536, 3998, 5304, 5997, 7996, 10608, 11994, 15992, 23988, 25987, 31984, 33983, 47976, 51974, 67966, 77961, 95952, 101949, 103948, 135932, 155922, 203898, 207896, 271864, 311844, 407796, 415792, 441779, 543728, 623688, 815592, 883558, 1247376, 1325337, 1631184, 1767116, 2650674, 3534232, 5301348, 7068464, 10602696, 21205392]

約数ペア:

[(1, 21205392), (2, 10602696), (3, 7068464), (4, 5301348), (6, 3534232), (8, 2650674), (12, 1767116), (13, 1631184), (16, 1325337), (17, 1247376), (24, 883558), (26, 815592), (34, 623688), (39, 543728), (48, 441779), (51, 415792), (52, 407796), (68, 311844), (78, 271864), (102, 207896), (104, 203898), (136, 155922), (156, 135932), (204, 103948), (208, 101949), (221, 95952), (272, 77961), (312, 67966), (408, 51974), (442, 47976), (624, 33983), (663, 31984), (816, 25987), (884, 23988), (1326, 15992), (1768, 11994), (1999, 10608), (2652, 7996), (3536, 5997), (3998, 5304)]