2219181520

素因数分解:

$2^4\times 5^1\times {\mathrm{97}}^1\times {\mathrm{285977}}^1$

素因数の和:286087

約数の個数: 40

約数和(自身を含む): 5212806984

約数和(自身を除く): 2993625464

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 97, 194, 388, 485, 776, 970, 1552, 1940, 3880, 7760, 285977, 571954, 1143908, 1429885, 2287816, 2859770, 4575632, 5719540, 11439080, 22878160, 27739769, 55479538, 110959076, 138698845, 221918152, 277397690, 443836304, 554795380, 1109590760, 2219181520]

約数ペア:

[(1, 2219181520), (2, 1109590760), (4, 554795380), (5, 443836304), (8, 277397690), (10, 221918152), (16, 138698845), (20, 110959076), (40, 55479538), (80, 27739769), (97, 22878160), (194, 11439080), (388, 5719540), (485, 4575632), (776, 2859770), (970, 2287816), (1552, 1429885), (1940, 1143908), (3880, 571954), (7760, 285977)]