21709168

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{59}}^1\times {\mathrm{61}}^1$

素因数の和:170

約数の個数: 80

約数和(自身を含む): 48434400

約数和(自身を除く): 26725232

約数列:

[1, 2, 4, 8, 13, 16, 26, 29, 52, 58, 59, 61, 104, 116, 118, 122, 208, 232, 236, 244, 377, 464, 472, 488, 754, 767, 793, 944, 976, 1508, 1534, 1586, 1711, 1769, 3016, 3068, 3172, 3422, 3538, 3599, 6032, 6136, 6344, 6844, 7076, 7198, 12272, 12688, 13688, 14152, 14396, 22243, 22997, 27376, 28304, 28792, 44486, 45994, 46787, 57584, 88972, 91988, 93574, 104371, 177944, 183976, 187148, 208742, 355888, 367952, 374296, 417484, 748592, 834968, 1356823, 1669936, 2713646, 5427292, 10854584, 21709168]

約数ペア:

[(1, 21709168), (2, 10854584), (4, 5427292), (8, 2713646), (13, 1669936), (16, 1356823), (26, 834968), (29, 748592), (52, 417484), (58, 374296), (59, 367952), (61, 355888), (104, 208742), (116, 187148), (118, 183976), (122, 177944), (208, 104371), (232, 93574), (236, 91988), (244, 88972), (377, 57584), (464, 46787), (472, 45994), (488, 44486), (754, 28792), (767, 28304), (793, 27376), (944, 22997), (976, 22243), (1508, 14396), (1534, 14152), (1586, 13688), (1711, 12688), (1769, 12272), (3016, 7198), (3068, 7076), (3172, 6844), (3422, 6344), (3538, 6136), (3599, 6032)]