20507175

素因数分解:

$3^4\times 5^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1$

素因数の和:95

約数の個数: 120

約数和(自身を含む): 44111760

約数和(自身を除く): 23604585

約数列:

[1, 3, 5, 9, 13, 15, 19, 25, 27, 39, 41, 45, 57, 65, 75, 81, 95, 117, 123, 135, 171, 195, 205, 225, 247, 285, 325, 351, 369, 405, 475, 513, 533, 585, 615, 675, 741, 779, 855, 975, 1025, 1053, 1107, 1235, 1425, 1539, 1599, 1755, 1845, 2025, 2223, 2337, 2565, 2665, 2925, 3075, 3321, 3705, 3895, 4275, 4797, 5265, 5535, 6175, 6669, 7011, 7695, 7995, 8775, 9225, 10127, 11115, 11685, 12825, 13325, 14391, 16605, 18525, 19475, 20007, 21033, 23985, 26325, 27675, 30381, 33345, 35055, 38475, 39975, 43173, 50635, 55575, 58425, 63099, 71955, 83025, 91143, 100035, 105165, 119925, 151905, 166725, 175275, 215865, 253175, 273429, 315495, 359775, 455715, 500175, 525825, 759525, 820287, 1079325, 1367145, 1577475, 2278575, 4101435, 6835725, 20507175]

約数ペア:

[(1, 20507175), (3, 6835725), (5, 4101435), (9, 2278575), (13, 1577475), (15, 1367145), (19, 1079325), (25, 820287), (27, 759525), (39, 525825), (41, 500175), (45, 455715), (57, 359775), (65, 315495), (75, 273429), (81, 253175), (95, 215865), (117, 175275), (123, 166725), (135, 151905), (171, 119925), (195, 105165), (205, 100035), (225, 91143), (247, 83025), (285, 71955), (325, 63099), (351, 58425), (369, 55575), (405, 50635), (475, 43173), (513, 39975), (533, 38475), (585, 35055), (615, 33345), (675, 30381), (741, 27675), (779, 26325), (855, 23985), (975, 21033), (1025, 20007), (1053, 19475), (1107, 18525), (1235, 16605), (1425, 14391), (1539, 13325), (1599, 12825), (1755, 11685), (1845, 11115), (2025, 10127), (2223, 9225), (2337, 8775), (2565, 7995), (2665, 7695), (2925, 7011), (3075, 6669), (3321, 6175), (3705, 5535), (3895, 5265), (4275, 4797)]