1640692221

素因数分解:

$3^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{53}}^1\times {\mathrm{39841}}^1$

素因数の和:39941

約数の個数: 32

約数和(自身を含む): 2616185088

約数和(自身を除く): 975492867

約数列:

[1, 3, 7, 21, 37, 53, 111, 159, 259, 371, 777, 1113, 1961, 5883, 13727, 39841, 41181, 119523, 278887, 836661, 1474117, 2111573, 4422351, 6334719, 10318819, 14781011, 30956457, 44343033, 78128201, 234384603, 546897407, 1640692221]

約数ペア:

[(1, 1640692221), (3, 546897407), (7, 234384603), (21, 78128201), (37, 44343033), (53, 30956457), (111, 14781011), (159, 10318819), (259, 6334719), (371, 4422351), (777, 2111573), (1113, 1474117), (1961, 836661), (5883, 278887), (13727, 119523), (39841, 41181)]