21814815

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{97}}^1$

素因数の和:192

約数の個数: 64

約数和(自身を含む): 40642560

約数和(自身を除く): 18827745

約数列:

[1, 3, 5, 11, 15, 29, 33, 47, 55, 87, 97, 141, 145, 165, 235, 291, 319, 435, 485, 517, 705, 957, 1067, 1363, 1455, 1551, 1595, 2585, 2813, 3201, 4089, 4559, 4785, 5335, 6815, 7755, 8439, 13677, 14065, 14993, 16005, 20445, 22795, 30943, 42195, 44979, 50149, 68385, 74965, 92829, 132211, 150447, 154715, 224895, 250745, 396633, 464145, 661055, 752235, 1454321, 1983165, 4362963, 7271605, 21814815]

約数ペア:

[(1, 21814815), (3, 7271605), (5, 4362963), (11, 1983165), (15, 1454321), (29, 752235), (33, 661055), (47, 464145), (55, 396633), (87, 250745), (97, 224895), (141, 154715), (145, 150447), (165, 132211), (235, 92829), (291, 74965), (319, 68385), (435, 50149), (485, 44979), (517, 42195), (705, 30943), (957, 22795), (1067, 20445), (1363, 16005), (1455, 14993), (1551, 14065), (1595, 13677), (2585, 8439), (2813, 7755), (3201, 6815), (4089, 5335), (4559, 4785)]