21085220275

素因数分解:

$5^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{197}}^1\times {\mathrm{35977}}^1$

素因数の和:36208

約数の個数: 48

約数和(自身を含む): 31799946816

約数和(自身を除く): 10714726541

約数列:

[1, 5, 7, 17, 25, 35, 85, 119, 175, 197, 425, 595, 985, 1379, 2975, 3349, 4925, 6895, 16745, 23443, 34475, 35977, 83725, 117215, 179885, 251839, 586075, 611609, 899425, 1259195, 3058045, 4281263, 6295975, 7087469, 15290225, 21406315, 35437345, 49612283, 107031575, 120486973, 177186725, 248061415, 602434865, 843408811, 1240307075, 3012174325, 4217044055, 21085220275]

約数ペア:

[(1, 21085220275), (5, 4217044055), (7, 3012174325), (17, 1240307075), (25, 843408811), (35, 602434865), (85, 248061415), (119, 177186725), (175, 120486973), (197, 107031575), (425, 49612283), (595, 35437345), (985, 21406315), (1379, 15290225), (2975, 7087469), (3349, 6295975), (4925, 4281263), (6895, 3058045), (16745, 1259195), (23443, 899425), (34475, 611609), (35977, 586075), (83725, 251839), (117215, 179885)]