31115140

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{109}}^1\times {\mathrm{2039}}^1$

素因数の和:2164

約数の個数: 48

約数和(自身を含む): 75398400

約数和(自身を除く): 44283260

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 109, 140, 218, 436, 545, 763, 1090, 1526, 2039, 2180, 3052, 3815, 4078, 7630, 8156, 10195, 14273, 15260, 20390, 28546, 40780, 57092, 71365, 142730, 222251, 285460, 444502, 889004, 1111255, 1555757, 2222510, 3111514, 4445020, 6223028, 7778785, 15557570, 31115140]

約数ペア:

[(1, 31115140), (2, 15557570), (4, 7778785), (5, 6223028), (7, 4445020), (10, 3111514), (14, 2222510), (20, 1555757), (28, 1111255), (35, 889004), (70, 444502), (109, 285460), (140, 222251), (218, 142730), (436, 71365), (545, 57092), (763, 40780), (1090, 28546), (1526, 20390), (2039, 15260), (2180, 14273), (3052, 10195), (3815, 8156), (4078, 7630)]