90702640

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{161969}}^1$

素因数の和:161989

約数の個数: 40

約数和(自身を含む): 241011360

約数和(自身を除く): 150308720

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 161969, 323938, 647876, 809845, 1133783, 1295752, 1619690, 2267566, 2591504, 3239380, 4535132, 5668915, 6478760, 9070264, 11337830, 12957520, 18140528, 22675660, 45351320, 90702640]

約数ペア:

[(1, 90702640), (2, 45351320), (4, 22675660), (5, 18140528), (7, 12957520), (8, 11337830), (10, 9070264), (14, 6478760), (16, 5668915), (20, 4535132), (28, 3239380), (35, 2591504), (40, 2267566), (56, 1619690), (70, 1295752), (80, 1133783), (112, 809845), (140, 647876), (280, 323938), (560, 161969)]