2017777720

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{113}}^1\times {\mathrm{63773}}^1$

素因数の和:63904

約数の個数: 64

約数和(自身を含む): 5234569920

約数和(自身を除く): 3216792200

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 113, 140, 226, 280, 452, 565, 791, 904, 1130, 1582, 2260, 3164, 3955, 4520, 6328, 7910, 15820, 31640, 63773, 127546, 255092, 318865, 446411, 510184, 637730, 892822, 1275460, 1785644, 2232055, 2550920, 3571288, 4464110, 7206349, 8928220, 14412698, 17856440, 28825396, 36031745, 50444443, 57650792, 72063490, 100888886, 144126980, 201777772, 252222215, 288253960, 403555544, 504444430, 1008888860, 2017777720]

約数ペア:

[(1, 2017777720), (2, 1008888860), (4, 504444430), (5, 403555544), (7, 288253960), (8, 252222215), (10, 201777772), (14, 144126980), (20, 100888886), (28, 72063490), (35, 57650792), (40, 50444443), (56, 36031745), (70, 28825396), (113, 17856440), (140, 14412698), (226, 8928220), (280, 7206349), (452, 4464110), (565, 3571288), (791, 2550920), (904, 2232055), (1130, 1785644), (1582, 1275460), (2260, 892822), (3164, 637730), (3955, 510184), (4520, 446411), (6328, 318865), (7910, 255092), (15820, 127546), (31640, 63773)]