201609040

素因数分解:

$2^4\times 5^1\times {\mathrm{991}}^1\times {\mathrm{2543}}^1$

素因数の和:3547

約数の個数: 40

約数和(自身を含む): 469398528

約数和(自身を除く): 267789488

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 991, 1982, 2543, 3964, 4955, 5086, 7928, 9910, 10172, 12715, 15856, 19820, 20344, 25430, 39640, 40688, 50860, 79280, 101720, 203440, 2520113, 5040226, 10080452, 12600565, 20160904, 25201130, 40321808, 50402260, 100804520, 201609040]

約数ペア:

[(1, 201609040), (2, 100804520), (4, 50402260), (5, 40321808), (8, 25201130), (10, 20160904), (16, 12600565), (20, 10080452), (40, 5040226), (80, 2520113), (991, 203440), (1982, 101720), (2543, 79280), (3964, 50860), (4955, 40688), (5086, 39640), (7928, 25430), (9910, 20344), (10172, 19820), (12715, 15856)]