215195505

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{113}}^1\times {\mathrm{2591}}^1$

素因数の和:2726

約数の個数: 48

約数和(自身を含む): 404227584

約数和(自身を除く): 189032079

約数列:

[1, 3, 5, 7, 15, 21, 35, 49, 105, 113, 147, 245, 339, 565, 735, 791, 1695, 2373, 2591, 3955, 5537, 7773, 11865, 12955, 16611, 18137, 27685, 38865, 54411, 83055, 90685, 126959, 272055, 292783, 380877, 634795, 878349, 1463915, 1904385, 2049481, 4391745, 6148443, 10247405, 14346367, 30742215, 43039101, 71731835, 215195505]

約数ペア:

[(1, 215195505), (3, 71731835), (5, 43039101), (7, 30742215), (15, 14346367), (21, 10247405), (35, 6148443), (49, 4391745), (105, 2049481), (113, 1904385), (147, 1463915), (245, 878349), (339, 634795), (565, 380877), (735, 292783), (791, 272055), (1695, 126959), (2373, 90685), (2591, 83055), (3955, 54411), (5537, 38865), (7773, 27685), (11865, 18137), (12955, 16611)]