19211985

素因数分解:

$3^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{89}}^1$

素因数の和:160

約数の個数: 80

約数和(自身を含む): 38419920

約数和(自身を除く): 19207935

約数列:

[1, 3, 5, 9, 13, 15, 27, 39, 41, 45, 65, 81, 89, 117, 123, 135, 195, 205, 267, 351, 369, 405, 445, 533, 585, 615, 801, 1053, 1107, 1157, 1335, 1599, 1755, 1845, 2403, 2665, 3321, 3471, 3649, 4005, 4797, 5265, 5535, 5785, 7209, 7995, 10413, 10947, 12015, 14391, 16605, 17355, 18245, 23985, 31239, 32841, 36045, 43173, 47437, 52065, 54735, 71955, 93717, 98523, 142311, 156195, 164205, 215865, 237185, 295569, 426933, 468585, 492615, 711555, 1280799, 1477845, 2134665, 3842397, 6403995, 19211985]

約数ペア:

[(1, 19211985), (3, 6403995), (5, 3842397), (9, 2134665), (13, 1477845), (15, 1280799), (27, 711555), (39, 492615), (41, 468585), (45, 426933), (65, 295569), (81, 237185), (89, 215865), (117, 164205), (123, 156195), (135, 142311), (195, 98523), (205, 93717), (267, 71955), (351, 54735), (369, 52065), (405, 47437), (445, 43173), (533, 36045), (585, 32841), (615, 31239), (801, 23985), (1053, 18245), (1107, 17355), (1157, 16605), (1335, 14391), (1599, 12015), (1755, 10947), (1845, 10413), (2403, 7995), (2665, 7209), (3321, 5785), (3471, 5535), (3649, 5265), (4005, 4797)]