21444360

素因数分解:

$2^3\times 3^1\times 5^1\times 7^3\times {\mathrm{521}}^1$

素因数の和:556

約数の個数: 128

約数和(自身を含む): 75168000

約数和(自身を除く): 53723640

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 49, 56, 60, 70, 84, 98, 105, 120, 140, 147, 168, 196, 210, 245, 280, 294, 343, 392, 420, 490, 521, 588, 686, 735, 840, 980, 1029, 1042, 1176, 1372, 1470, 1563, 1715, 1960, 2058, 2084, 2605, 2744, 2940, 3126, 3430, 3647, 4116, 4168, 5145, 5210, 5880, 6252, 6860, 7294, 7815, 8232, 10290, 10420, 10941, 12504, 13720, 14588, 15630, 18235, 20580, 20840, 21882, 25529, 29176, 31260, 36470, 41160, 43764, 51058, 54705, 62520, 72940, 76587, 87528, 102116, 109410, 127645, 145880, 153174, 178703, 204232, 218820, 255290, 306348, 357406, 382935, 437640, 510580, 536109, 612696, 714812, 765870, 893515, 1021160, 1072218, 1429624, 1531740, 1787030, 2144436, 2680545, 3063480, 3574060, 4288872, 5361090, 7148120, 10722180, 21444360]

約数ペア:

[(1, 21444360), (2, 10722180), (3, 7148120), (4, 5361090), (5, 4288872), (6, 3574060), (7, 3063480), (8, 2680545), (10, 2144436), (12, 1787030), (14, 1531740), (15, 1429624), (20, 1072218), (21, 1021160), (24, 893515), (28, 765870), (30, 714812), (35, 612696), (40, 536109), (42, 510580), (49, 437640), (56, 382935), (60, 357406), (70, 306348), (84, 255290), (98, 218820), (105, 204232), (120, 178703), (140, 153174), (147, 145880), (168, 127645), (196, 109410), (210, 102116), (245, 87528), (280, 76587), (294, 72940), (343, 62520), (392, 54705), (420, 51058), (490, 43764), (521, 41160), (588, 36470), (686, 31260), (735, 29176), (840, 25529), (980, 21882), (1029, 20840), (1042, 20580), (1176, 18235), (1372, 15630), (1470, 14588), (1563, 13720), (1715, 12504), (1960, 10941), (2058, 10420), (2084, 10290), (2605, 8232), (2744, 7815), (2940, 7294), (3126, 6860), (3430, 6252), (3647, 5880), (4116, 5210), (4168, 5145)]