21270975

素因数分解:

$3^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{59}}^1$

素因数の和:125

約数の個数: 96

約数和(自身を含む): 42854400

約数和(自身を除く): 21583425

約数列:

[1, 3, 5, 11, 15, 19, 23, 25, 33, 55, 57, 59, 69, 75, 95, 115, 165, 177, 209, 253, 275, 285, 295, 345, 437, 475, 575, 627, 649, 759, 825, 885, 1045, 1121, 1265, 1311, 1357, 1425, 1475, 1725, 1947, 2185, 3135, 3245, 3363, 3795, 4071, 4425, 4807, 5225, 5605, 6325, 6555, 6785, 9735, 10925, 12331, 14421, 14927, 15675, 16225, 16815, 18975, 20355, 24035, 25783, 28025, 32775, 33925, 36993, 44781, 48675, 61655, 72105, 74635, 77349, 84075, 101775, 120175, 128915, 184965, 223905, 283613, 308275, 360525, 373175, 386745, 644575, 850839, 924825, 1119525, 1418065, 1933725, 4254195, 7090325, 21270975]

約数ペア:

[(1, 21270975), (3, 7090325), (5, 4254195), (11, 1933725), (15, 1418065), (19, 1119525), (23, 924825), (25, 850839), (33, 644575), (55, 386745), (57, 373175), (59, 360525), (69, 308275), (75, 283613), (95, 223905), (115, 184965), (165, 128915), (177, 120175), (209, 101775), (253, 84075), (275, 77349), (285, 74635), (295, 72105), (345, 61655), (437, 48675), (475, 44781), (575, 36993), (627, 33925), (649, 32775), (759, 28025), (825, 25783), (885, 24035), (1045, 20355), (1121, 18975), (1265, 16815), (1311, 16225), (1357, 15675), (1425, 14927), (1475, 14421), (1725, 12331), (1947, 10925), (2185, 9735), (3135, 6785), (3245, 6555), (3363, 6325), (3795, 5605), (4071, 5225), (4425, 4807)]