20348901880

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{157}}^1\times {\mathrm{79031}}^1$

素因数の和:79240

約数の個数: 64

約数和(自身を含む): 47201071680

約数和(自身を除く): 26852169800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 157, 164, 205, 314, 328, 410, 628, 785, 820, 1256, 1570, 1640, 3140, 6280, 6437, 12874, 25748, 32185, 51496, 64370, 79031, 128740, 158062, 257480, 316124, 395155, 632248, 790310, 1580620, 3161240, 3240271, 6480542, 12407867, 12961084, 16201355, 24815734, 25922168, 32402710, 49631468, 62039335, 64805420, 99262936, 124078670, 129610840, 248157340, 496314680, 508722547, 1017445094, 2034890188, 2543612735, 4069780376, 5087225470, 10174450940, 20348901880]

約数ペア:

[(1, 20348901880), (2, 10174450940), (4, 5087225470), (5, 4069780376), (8, 2543612735), (10, 2034890188), (20, 1017445094), (40, 508722547), (41, 496314680), (82, 248157340), (157, 129610840), (164, 124078670), (205, 99262936), (314, 64805420), (328, 62039335), (410, 49631468), (628, 32402710), (785, 25922168), (820, 24815734), (1256, 16201355), (1570, 12961084), (1640, 12407867), (3140, 6480542), (6280, 3240271), (6437, 3161240), (12874, 1580620), (25748, 790310), (32185, 632248), (51496, 395155), (64370, 316124), (79031, 257480), (128740, 158062)]