1638422656

素因数分解:

$2^7\times {\mathrm{13}}^1\times {\mathrm{83}}^1\times {\mathrm{11863}}^1$

素因数の和:11973

約数の個数: 64

約数和(自身を含む): 3557776320

約数和(自身を除く): 1919353664

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 64, 83, 104, 128, 166, 208, 332, 416, 664, 832, 1079, 1328, 1664, 2158, 2656, 4316, 5312, 8632, 10624, 11863, 17264, 23726, 34528, 47452, 69056, 94904, 138112, 154219, 189808, 308438, 379616, 616876, 759232, 984629, 1233752, 1518464, 1969258, 2467504, 3938516, 4935008, 7877032, 9870016, 12800177, 15754064, 19740032, 25600354, 31508128, 51200708, 63016256, 102401416, 126032512, 204802832, 409605664, 819211328, 1638422656]

約数ペア:

[(1, 1638422656), (2, 819211328), (4, 409605664), (8, 204802832), (13, 126032512), (16, 102401416), (26, 63016256), (32, 51200708), (52, 31508128), (64, 25600354), (83, 19740032), (104, 15754064), (128, 12800177), (166, 9870016), (208, 7877032), (332, 4935008), (416, 3938516), (664, 2467504), (832, 1969258), (1079, 1518464), (1328, 1233752), (1664, 984629), (2158, 759232), (2656, 616876), (4316, 379616), (5312, 308438), (8632, 189808), (10624, 154219), (11863, 138112), (17264, 94904), (23726, 69056), (34528, 47452)]