20565643980

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{6995117}}^1$

素因数の和:6995143

約数の個数: 72

約数和(自身を含む): 66985249968

約数和(自身を除く): 46419605988

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 49, 60, 70, 84, 98, 105, 140, 147, 196, 210, 245, 294, 420, 490, 588, 735, 980, 1470, 2940, 6995117, 13990234, 20985351, 27980468, 34975585, 41970702, 48965819, 69951170, 83941404, 97931638, 104926755, 139902340, 146897457, 195863276, 209853510, 244829095, 293794914, 342760733, 419707020, 489658190, 587589828, 685521466, 734487285, 979316380, 1028282199, 1371042932, 1468974570, 1713803665, 2056564398, 2937949140, 3427607330, 4113128796, 5141410995, 6855214660, 10282821990, 20565643980]

約数ペア:

[(1, 20565643980), (2, 10282821990), (3, 6855214660), (4, 5141410995), (5, 4113128796), (6, 3427607330), (7, 2937949140), (10, 2056564398), (12, 1713803665), (14, 1468974570), (15, 1371042932), (20, 1028282199), (21, 979316380), (28, 734487285), (30, 685521466), (35, 587589828), (42, 489658190), (49, 419707020), (60, 342760733), (70, 293794914), (84, 244829095), (98, 209853510), (105, 195863276), (140, 146897457), (147, 139902340), (196, 104926755), (210, 97931638), (245, 83941404), (294, 69951170), (420, 48965819), (490, 41970702), (588, 34975585), (735, 27980468), (980, 20985351), (1470, 13990234), (2940, 6995117)]