20829480

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{137}}^1\times {\mathrm{181}}^1$

素因数の和:339

約数の個数: 128

約数和(自身を含む): 72334080

約数和(自身を除く): 51504600

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 137, 140, 168, 181, 210, 274, 280, 362, 411, 420, 543, 548, 685, 724, 822, 840, 905, 959, 1086, 1096, 1267, 1370, 1448, 1644, 1810, 1918, 2055, 2172, 2534, 2715, 2740, 2877, 3288, 3620, 3801, 3836, 4110, 4344, 4795, 5068, 5430, 5480, 5754, 6335, 7240, 7602, 7672, 8220, 9590, 10136, 10860, 11508, 12670, 14385, 15204, 16440, 19005, 19180, 21720, 23016, 24797, 25340, 28770, 30408, 38010, 38360, 49594, 50680, 57540, 74391, 76020, 99188, 115080, 123985, 148782, 152040, 173579, 198376, 247970, 297564, 347158, 371955, 495940, 520737, 595128, 694316, 743910, 867895, 991880, 1041474, 1388632, 1487820, 1735790, 2082948, 2603685, 2975640, 3471580, 4165896, 5207370, 6943160, 10414740, 20829480]

約数ペア:

[(1, 20829480), (2, 10414740), (3, 6943160), (4, 5207370), (5, 4165896), (6, 3471580), (7, 2975640), (8, 2603685), (10, 2082948), (12, 1735790), (14, 1487820), (15, 1388632), (20, 1041474), (21, 991880), (24, 867895), (28, 743910), (30, 694316), (35, 595128), (40, 520737), (42, 495940), (56, 371955), (60, 347158), (70, 297564), (84, 247970), (105, 198376), (120, 173579), (137, 152040), (140, 148782), (168, 123985), (181, 115080), (210, 99188), (274, 76020), (280, 74391), (362, 57540), (411, 50680), (420, 49594), (543, 38360), (548, 38010), (685, 30408), (724, 28770), (822, 25340), (840, 24797), (905, 23016), (959, 21720), (1086, 19180), (1096, 19005), (1267, 16440), (1370, 15204), (1448, 14385), (1644, 12670), (1810, 11508), (1918, 10860), (2055, 10136), (2172, 9590), (2534, 8220), (2715, 7672), (2740, 7602), (2877, 7240), (3288, 6335), (3620, 5754), (3801, 5480), (3836, 5430), (4110, 5068), (4344, 4795)]