199355320

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{81703}}^1$

素因数の和:81775

約数の個数: 32

約数和(自身を含む): 455908320

約数和(自身を除く): 256553000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 244, 305, 488, 610, 1220, 2440, 81703, 163406, 326812, 408515, 653624, 817030, 1634060, 3268120, 4983883, 9967766, 19935532, 24919415, 39871064, 49838830, 99677660, 199355320]

約数ペア:

[(1, 199355320), (2, 99677660), (4, 49838830), (5, 39871064), (8, 24919415), (10, 19935532), (20, 9967766), (40, 4983883), (61, 3268120), (122, 1634060), (244, 817030), (305, 653624), (488, 408515), (610, 326812), (1220, 163406), (2440, 81703)]