21237376

素因数分解:

$2^7\times {\mathrm{83}}^1\times {\mathrm{1999}}^1$

素因数の和:2096

約数の個数: 32

約数和(自身を含む): 42840000

約数和(自身を除く): 21602624

約数列:

[1, 2, 4, 8, 16, 32, 64, 83, 128, 166, 332, 664, 1328, 1999, 2656, 3998, 5312, 7996, 10624, 15992, 31984, 63968, 127936, 165917, 255872, 331834, 663668, 1327336, 2654672, 5309344, 10618688, 21237376]

約数ペア:

[(1, 21237376), (2, 10618688), (4, 5309344), (8, 2654672), (16, 1327336), (32, 663668), (64, 331834), (83, 255872), (128, 165917), (166, 127936), (332, 63968), (664, 31984), (1328, 15992), (1999, 10624), (2656, 7996), (3998, 5312)]