209590105

素因数分解:

$5^1\times {\mathrm{29}}^1\times {\mathrm{89}}^1\times {\mathrm{109}}^1\times {\mathrm{149}}^1$

素因数の和:381

約数の個数: 32

約数和(自身を含む): 267300000

約数和(自身を除く): 57709895

約数列:

[1, 5, 29, 89, 109, 145, 149, 445, 545, 745, 2581, 3161, 4321, 9701, 12905, 13261, 15805, 16241, 21605, 48505, 66305, 81205, 281329, 384569, 470989, 1406645, 1445449, 1922845, 2354945, 7227245, 41918021, 209590105]

約数ペア:

[(1, 209590105), (5, 41918021), (29, 7227245), (89, 2354945), (109, 1922845), (145, 1445449), (149, 1406645), (445, 470989), (545, 384569), (745, 281329), (2581, 81205), (3161, 66305), (4321, 48505), (9701, 21605), (12905, 16241), (13261, 15805)]