81299900

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^2\times {\mathrm{6719}}^1$

素因数の和:6755

約数の個数: 54

約数和(自身を含む): 193945920

約数和(自身を除く): 112646020

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 25, 44, 50, 55, 100, 110, 121, 220, 242, 275, 484, 550, 605, 1100, 1210, 2420, 3025, 6050, 6719, 12100, 13438, 26876, 33595, 67190, 73909, 134380, 147818, 167975, 295636, 335950, 369545, 671900, 739090, 812999, 1478180, 1625998, 1847725, 3251996, 3695450, 4064995, 7390900, 8129990, 16259980, 20324975, 40649950, 81299900]

約数ペア:

[(1, 81299900), (2, 40649950), (4, 20324975), (5, 16259980), (10, 8129990), (11, 7390900), (20, 4064995), (22, 3695450), (25, 3251996), (44, 1847725), (50, 1625998), (55, 1478180), (100, 812999), (110, 739090), (121, 671900), (220, 369545), (242, 335950), (275, 295636), (484, 167975), (550, 147818), (605, 134380), (1100, 73909), (1210, 67190), (2420, 33595), (3025, 26876), (6050, 13438), (6719, 12100)]