About the Number

388989940

388989939 ← → 388989941

2進数表記:10111001011111000001111110100

漢数字表記:三億八千八百九十八万九千九百四十

素因数分解:

2 2 × 5 1 × 67 1 × 107 1 × 2713 1

素因数の和:2896
約数の個数: 48
約数和(自身を含む): 837127872
約数和(自身を除く): 448137932

約数列:
[1, 2, 4, 5, 10, 20, 67, 107, 134, 214, 268, 335, 428, 535, 670, 1070, 1340, 2140, 2713, 5426, 7169, 10852, 13565, 14338, 27130, 28676, 35845, 54260, 71690, 143380, 181771, 290291, 363542, 580582, 727084, 908855, 1161164, 1451455, 1817710, 2902910, 3635420, 5805820, 19449497, 38898994, 77797988, 97247485, 194494970, 388989940]

約数ペア:
[(1, 388989940), (2, 194494970), (4, 97247485), (5, 77797988), (10, 38898994), (20, 19449497), (67, 5805820), (107, 3635420), (134, 2902910), (214, 1817710), (268, 1451455), (335, 1161164), (428, 908855), (535, 727084), (670, 580582), (1070, 363542), (1340, 290291), (2140, 181771), (2713, 143380), (5426, 71690), (7169, 54260), (10852, 35845), (13565, 28676), (14338, 27130)]

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