20852580

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{131}}^1\times {\mathrm{379}}^1$

素因数の和:529

約数の個数: 96

約数和(自身を含む): 67415040

約数和(自身を除く): 46562460

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 131, 140, 210, 262, 379, 393, 420, 524, 655, 758, 786, 917, 1137, 1310, 1516, 1572, 1834, 1895, 1965, 2274, 2620, 2653, 2751, 3668, 3790, 3930, 4548, 4585, 5306, 5502, 5685, 7580, 7860, 7959, 9170, 10612, 11004, 11370, 13265, 13755, 15918, 18340, 22740, 26530, 27510, 31836, 39795, 49649, 53060, 55020, 79590, 99298, 148947, 159180, 198596, 248245, 297894, 347543, 496490, 595788, 695086, 744735, 992980, 1042629, 1390172, 1489470, 1737715, 2085258, 2978940, 3475430, 4170516, 5213145, 6950860, 10426290, 20852580]

約数ペア:

[(1, 20852580), (2, 10426290), (3, 6950860), (4, 5213145), (5, 4170516), (6, 3475430), (7, 2978940), (10, 2085258), (12, 1737715), (14, 1489470), (15, 1390172), (20, 1042629), (21, 992980), (28, 744735), (30, 695086), (35, 595788), (42, 496490), (60, 347543), (70, 297894), (84, 248245), (105, 198596), (131, 159180), (140, 148947), (210, 99298), (262, 79590), (379, 55020), (393, 53060), (420, 49649), (524, 39795), (655, 31836), (758, 27510), (786, 26530), (917, 22740), (1137, 18340), (1310, 15918), (1516, 13755), (1572, 13265), (1834, 11370), (1895, 11004), (1965, 10612), (2274, 9170), (2620, 7959), (2653, 7860), (2751, 7580), (3668, 5685), (3790, 5502), (3930, 5306), (4548, 4585)]