257347800388

素因数分解:

$2^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{353}}^1\times {\mathrm{839897}}^1$

素因数の和:840292

約数の個数: 48

約数和(自身を含む): 532804414464

約数和(自身を除く): 275456614076

約数列:

[1, 2, 4, 7, 14, 28, 31, 62, 124, 217, 353, 434, 706, 868, 1412, 2471, 4942, 9884, 10943, 21886, 43772, 76601, 153202, 306404, 839897, 1679794, 3359588, 5879279, 11758558, 23517116, 26036807, 52073614, 104147228, 182257649, 296483641, 364515298, 592967282, 729030596, 1185934564, 2075385487, 4150770974, 8301541948, 9190992871, 18381985742, 36763971484, 64336950097, 128673900194, 257347800388]

約数ペア:

[(1, 257347800388), (2, 128673900194), (4, 64336950097), (7, 36763971484), (14, 18381985742), (28, 9190992871), (31, 8301541948), (62, 4150770974), (124, 2075385487), (217, 1185934564), (353, 729030596), (434, 592967282), (706, 364515298), (868, 296483641), (1412, 182257649), (2471, 104147228), (4942, 52073614), (9884, 26036807), (10943, 23517116), (21886, 11758558), (43772, 5879279), (76601, 3359588), (153202, 1679794), (306404, 839897)]