21294416

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{227}}^1$

素因数の和:300

約数の個数: 80

約数和(自身を含む): 49871808

約数和(自身を除く): 28577392

約数列:

[1, 2, 4, 8, 11, 13, 16, 22, 26, 41, 44, 52, 82, 88, 104, 143, 164, 176, 208, 227, 286, 328, 451, 454, 533, 572, 656, 902, 908, 1066, 1144, 1804, 1816, 2132, 2288, 2497, 2951, 3608, 3632, 4264, 4994, 5863, 5902, 7216, 8528, 9307, 9988, 11726, 11804, 18614, 19976, 23452, 23608, 32461, 37228, 39952, 46904, 47216, 64922, 74456, 93808, 102377, 120991, 129844, 148912, 204754, 241982, 259688, 409508, 483964, 519376, 819016, 967928, 1330901, 1638032, 1935856, 2661802, 5323604, 10647208, 21294416]

約数ペア:

[(1, 21294416), (2, 10647208), (4, 5323604), (8, 2661802), (11, 1935856), (13, 1638032), (16, 1330901), (22, 967928), (26, 819016), (41, 519376), (44, 483964), (52, 409508), (82, 259688), (88, 241982), (104, 204754), (143, 148912), (164, 129844), (176, 120991), (208, 102377), (227, 93808), (286, 74456), (328, 64922), (451, 47216), (454, 46904), (533, 39952), (572, 37228), (656, 32461), (902, 23608), (908, 23452), (1066, 19976), (1144, 18614), (1804, 11804), (1816, 11726), (2132, 9988), (2288, 9307), (2497, 8528), (2951, 7216), (3608, 5902), (3632, 5863), (4264, 4994)]