21941556

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{283}}^1$

素因数の和:381

約数の個数: 96

約数和(自身を含む): 64124928

約数和(自身を除く): 42183372

約数列:

[1, 2, 3, 4, 6, 7, 12, 13, 14, 21, 26, 28, 39, 42, 52, 71, 78, 84, 91, 142, 156, 182, 213, 273, 283, 284, 364, 426, 497, 546, 566, 849, 852, 923, 994, 1092, 1132, 1491, 1698, 1846, 1981, 1988, 2769, 2982, 3396, 3679, 3692, 3962, 5538, 5943, 5964, 6461, 7358, 7924, 11037, 11076, 11886, 12922, 14716, 19383, 20093, 22074, 23772, 25753, 25844, 38766, 40186, 44148, 51506, 60279, 77259, 77532, 80372, 103012, 120558, 140651, 154518, 241116, 261209, 281302, 309036, 421953, 522418, 562604, 783627, 843906, 1044836, 1567254, 1687812, 1828463, 3134508, 3656926, 5485389, 7313852, 10970778, 21941556]

約数ペア:

[(1, 21941556), (2, 10970778), (3, 7313852), (4, 5485389), (6, 3656926), (7, 3134508), (12, 1828463), (13, 1687812), (14, 1567254), (21, 1044836), (26, 843906), (28, 783627), (39, 562604), (42, 522418), (52, 421953), (71, 309036), (78, 281302), (84, 261209), (91, 241116), (142, 154518), (156, 140651), (182, 120558), (213, 103012), (273, 80372), (283, 77532), (284, 77259), (364, 60279), (426, 51506), (497, 44148), (546, 40186), (566, 38766), (849, 25844), (852, 25753), (923, 23772), (994, 22074), (1092, 20093), (1132, 19383), (1491, 14716), (1698, 12922), (1846, 11886), (1981, 11076), (1988, 11037), (2769, 7924), (2982, 7358), (3396, 6461), (3679, 5964), (3692, 5943), (3962, 5538)]