21006782080

素因数分解:

$2^7\times 5^1\times {\mathrm{83}}^1\times {\mathrm{395459}}^1$

素因数の和:395561

約数の個数: 64

約数和(自身を含む): 50824519200

約数和(自身を除く): 29817737120

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 83, 128, 160, 166, 320, 332, 415, 640, 664, 830, 1328, 1660, 2656, 3320, 5312, 6640, 10624, 13280, 26560, 53120, 395459, 790918, 1581836, 1977295, 3163672, 3954590, 6327344, 7909180, 12654688, 15818360, 25309376, 31636720, 32823097, 50618752, 63273440, 65646194, 126546880, 131292388, 164115485, 253093760, 262584776, 328230970, 525169552, 656461940, 1050339104, 1312923880, 2100678208, 2625847760, 4201356416, 5251695520, 10503391040, 21006782080]

約数ペア:

[(1, 21006782080), (2, 10503391040), (4, 5251695520), (5, 4201356416), (8, 2625847760), (10, 2100678208), (16, 1312923880), (20, 1050339104), (32, 656461940), (40, 525169552), (64, 328230970), (80, 262584776), (83, 253093760), (128, 164115485), (160, 131292388), (166, 126546880), (320, 65646194), (332, 63273440), (415, 50618752), (640, 32823097), (664, 31636720), (830, 25309376), (1328, 15818360), (1660, 12654688), (2656, 7909180), (3320, 6327344), (5312, 3954590), (6640, 3163672), (10624, 1977295), (13280, 1581836), (26560, 790918), (53120, 395459)]