20980130

素因数分解:

$2^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{97}}^1\times {\mathrm{503}}^1$

素因数の和:650

約数の個数: 32

約数和(自身を含む): 39118464

約数和(自身を除く): 18138334

約数列:

[1, 2, 5, 10, 43, 86, 97, 194, 215, 430, 485, 503, 970, 1006, 2515, 4171, 5030, 8342, 20855, 21629, 41710, 43258, 48791, 97582, 108145, 216290, 243955, 487910, 2098013, 4196026, 10490065, 20980130]

約数ペア:

[(1, 20980130), (2, 10490065), (5, 4196026), (10, 2098013), (43, 487910), (86, 243955), (97, 216290), (194, 108145), (215, 97582), (430, 48791), (485, 43258), (503, 41710), (970, 21629), (1006, 20855), (2515, 8342), (4171, 5030)]