20791920

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{2113}}^1$

素因数の和:2170

約数の個数: 80

約数和(自身を含む): 66058272

約数和(自身を除く): 45266352

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 41, 48, 60, 80, 82, 120, 123, 164, 205, 240, 246, 328, 410, 492, 615, 656, 820, 984, 1230, 1640, 1968, 2113, 2460, 3280, 4226, 4920, 6339, 8452, 9840, 10565, 12678, 16904, 21130, 25356, 31695, 33808, 42260, 50712, 63390, 84520, 86633, 101424, 126780, 169040, 173266, 253560, 259899, 346532, 433165, 507120, 519798, 693064, 866330, 1039596, 1299495, 1386128, 1732660, 2079192, 2598990, 3465320, 4158384, 5197980, 6930640, 10395960, 20791920]

約数ペア:

[(1, 20791920), (2, 10395960), (3, 6930640), (4, 5197980), (5, 4158384), (6, 3465320), (8, 2598990), (10, 2079192), (12, 1732660), (15, 1386128), (16, 1299495), (20, 1039596), (24, 866330), (30, 693064), (40, 519798), (41, 507120), (48, 433165), (60, 346532), (80, 259899), (82, 253560), (120, 173266), (123, 169040), (164, 126780), (205, 101424), (240, 86633), (246, 84520), (328, 63390), (410, 50712), (492, 42260), (615, 33808), (656, 31695), (820, 25356), (984, 21130), (1230, 16904), (1640, 12678), (1968, 10565), (2113, 9840), (2460, 8452), (3280, 6339), (4226, 4920)]