140421520

素因数分解:

$2^4\times 5^1\times {\mathrm{131}}^1\times {\mathrm{13399}}^1$

素因数の和:13543

約数の個数: 40

約数和(自身を含む): 328996800

約数和(自身を除く): 188575280

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 131, 262, 524, 655, 1048, 1310, 2096, 2620, 5240, 10480, 13399, 26798, 53596, 66995, 107192, 133990, 214384, 267980, 535960, 1071920, 1755269, 3510538, 7021076, 8776345, 14042152, 17552690, 28084304, 35105380, 70210760, 140421520]

約数ペア:

[(1, 140421520), (2, 70210760), (4, 35105380), (5, 28084304), (8, 17552690), (10, 14042152), (16, 8776345), (20, 7021076), (40, 3510538), (80, 1755269), (131, 1071920), (262, 535960), (524, 267980), (655, 214384), (1048, 133990), (1310, 107192), (2096, 66995), (2620, 53596), (5240, 26798), (10480, 13399)]