21407265135

素因数分解:

$3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{97}}^1\times {\mathrm{359}}^1\times {\mathrm{719}}^1$

素因数の和:1205

約数の個数: 96

約数和(自身を含む): 39626496000

約数和(自身を除く): 18219230865

約数列:

[1, 3, 5, 9, 15, 19, 45, 57, 95, 97, 171, 285, 291, 359, 485, 719, 855, 873, 1077, 1455, 1795, 1843, 2157, 3231, 3595, 4365, 5385, 5529, 6471, 6821, 9215, 10785, 13661, 16155, 16587, 20463, 27645, 32355, 34105, 34823, 40983, 61389, 68305, 69743, 82935, 102315, 104469, 122949, 174115, 204915, 209229, 258121, 306945, 313407, 348715, 522345, 614745, 627687, 661637, 774363, 1046145, 1290605, 1325117, 1567035, 1984911, 2323089, 3138435, 3308185, 3871815, 3975351, 4904299, 5954733, 6625585, 9924555, 11615445, 11926053, 14712897, 19876755, 24521495, 25037737, 29773665, 44138691, 59630265, 73564485, 75113211, 125188685, 220693455, 225339633, 375566055, 475717003, 1126698165, 1427151009, 2378585015, 4281453027, 7135755045, 21407265135]

約数ペア:

[(1, 21407265135), (3, 7135755045), (5, 4281453027), (9, 2378585015), (15, 1427151009), (19, 1126698165), (45, 475717003), (57, 375566055), (95, 225339633), (97, 220693455), (171, 125188685), (285, 75113211), (291, 73564485), (359, 59630265), (485, 44138691), (719, 29773665), (855, 25037737), (873, 24521495), (1077, 19876755), (1455, 14712897), (1795, 11926053), (1843, 11615445), (2157, 9924555), (3231, 6625585), (3595, 5954733), (4365, 4904299), (5385, 3975351), (5529, 3871815), (6471, 3308185), (6821, 3138435), (9215, 2323089), (10785, 1984911), (13661, 1567035), (16155, 1325117), (16587, 1290605), (20463, 1046145), (27645, 774363), (32355, 661637), (34105, 627687), (34823, 614745), (40983, 522345), (61389, 348715), (68305, 313407), (69743, 306945), (82935, 258121), (102315, 209229), (104469, 204915), (122949, 174115)]