78468880

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{140123}}^1$

素因数の和:140143

約数の個数: 40

約数和(自身を含む): 208504512

約数和(自身を除く): 130035632

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 140123, 280246, 560492, 700615, 980861, 1120984, 1401230, 1961722, 2241968, 2802460, 3923444, 4904305, 5604920, 7846888, 9808610, 11209840, 15693776, 19617220, 39234440, 78468880]

約数ペア:

[(1, 78468880), (2, 39234440), (4, 19617220), (5, 15693776), (7, 11209840), (8, 9808610), (10, 7846888), (14, 5604920), (16, 4904305), (20, 3923444), (28, 2802460), (35, 2241968), (40, 1961722), (56, 1401230), (70, 1120984), (80, 980861), (112, 700615), (140, 560492), (280, 280246), (560, 140123)]