2141840

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{653}}^1$

素因数の和:707

約数の個数: 40

約数和(自身を含む): 5109048

約数和(自身を除く): 2967208

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 80, 82, 164, 205, 328, 410, 653, 656, 820, 1306, 1640, 2612, 3265, 3280, 5224, 6530, 10448, 13060, 26120, 26773, 52240, 53546, 107092, 133865, 214184, 267730, 428368, 535460, 1070920, 2141840]

約数ペア:

[(1, 2141840), (2, 1070920), (4, 535460), (5, 428368), (8, 267730), (10, 214184), (16, 133865), (20, 107092), (40, 53546), (41, 52240), (80, 26773), (82, 26120), (164, 13060), (205, 10448), (328, 6530), (410, 5224), (653, 3280), (656, 3265), (820, 2612), (1306, 1640)]