257831490

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{1227769}}^1$

素因数の和:1227786

約数の個数: 32

約数和(自身を含む): 707195520

約数和(自身を除く): 449364030

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 70, 105, 210, 1227769, 2455538, 3683307, 6138845, 7366614, 8594383, 12277690, 17188766, 18416535, 25783149, 36833070, 42971915, 51566298, 85943830, 128915745, 257831490]

約数ペア:

[(1, 257831490), (2, 128915745), (3, 85943830), (5, 51566298), (6, 42971915), (7, 36833070), (10, 25783149), (14, 18416535), (15, 17188766), (21, 12277690), (30, 8594383), (35, 7366614), (42, 6138845), (70, 3683307), (105, 2455538), (210, 1227769)]