20404930

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{1319}}^1$

素因数の和:1363

約数の個数: 64

約数和(自身を含む): 47900160

約数和(自身を除く): 27495230

約数列:

[1, 2, 5, 7, 10, 13, 14, 17, 26, 34, 35, 65, 70, 85, 91, 119, 130, 170, 182, 221, 238, 442, 455, 595, 910, 1105, 1190, 1319, 1547, 2210, 2638, 3094, 6595, 7735, 9233, 13190, 15470, 17147, 18466, 22423, 34294, 44846, 46165, 85735, 92330, 112115, 120029, 156961, 171470, 224230, 240058, 291499, 313922, 582998, 600145, 784805, 1200290, 1457495, 1569610, 2040493, 2914990, 4080986, 10202465, 20404930]

約数ペア:

[(1, 20404930), (2, 10202465), (5, 4080986), (7, 2914990), (10, 2040493), (13, 1569610), (14, 1457495), (17, 1200290), (26, 784805), (34, 600145), (35, 582998), (65, 313922), (70, 291499), (85, 240058), (91, 224230), (119, 171470), (130, 156961), (170, 120029), (182, 112115), (221, 92330), (238, 85735), (442, 46165), (455, 44846), (595, 34294), (910, 22423), (1105, 18466), (1190, 17147), (1319, 15470), (1547, 13190), (2210, 9233), (2638, 7735), (3094, 6595)]