81745040

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{83}}^1\times {\mathrm{947}}^1$

素因数の和:1056

約数の個数: 80

約数和(自身を含む): 207361728

約数和(自身を除く): 125616688

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 83, 104, 130, 166, 208, 260, 332, 415, 520, 664, 830, 947, 1040, 1079, 1328, 1660, 1894, 2158, 3320, 3788, 4316, 4735, 5395, 6640, 7576, 8632, 9470, 10790, 12311, 15152, 17264, 18940, 21580, 24622, 37880, 43160, 49244, 61555, 75760, 78601, 86320, 98488, 123110, 157202, 196976, 246220, 314404, 393005, 492440, 628808, 786010, 984880, 1021813, 1257616, 1572020, 2043626, 3144040, 4087252, 5109065, 6288080, 8174504, 10218130, 16349008, 20436260, 40872520, 81745040]

約数ペア:

[(1, 81745040), (2, 40872520), (4, 20436260), (5, 16349008), (8, 10218130), (10, 8174504), (13, 6288080), (16, 5109065), (20, 4087252), (26, 3144040), (40, 2043626), (52, 1572020), (65, 1257616), (80, 1021813), (83, 984880), (104, 786010), (130, 628808), (166, 492440), (208, 393005), (260, 314404), (332, 246220), (415, 196976), (520, 157202), (664, 123110), (830, 98488), (947, 86320), (1040, 78601), (1079, 75760), (1328, 61555), (1660, 49244), (1894, 43160), (2158, 37880), (3320, 24622), (3788, 21580), (4316, 18940), (4735, 17264), (5395, 15152), (6640, 12311), (7576, 10790), (8632, 9470)]