398142320

素因数分解:

$2^4\times 5^1\times {\mathrm{97}}^1\times {\mathrm{51307}}^1$

素因数の和:51417

約数の個数: 40

約数和(自身を含む): 935242224

約数和(自身を除く): 537099904

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 97, 194, 388, 485, 776, 970, 1552, 1940, 3880, 7760, 51307, 102614, 205228, 256535, 410456, 513070, 820912, 1026140, 2052280, 4104560, 4976779, 9953558, 19907116, 24883895, 39814232, 49767790, 79628464, 99535580, 199071160, 398142320]

約数ペア:

[(1, 398142320), (2, 199071160), (4, 99535580), (5, 79628464), (8, 49767790), (10, 39814232), (16, 24883895), (20, 19907116), (40, 9953558), (80, 4976779), (97, 4104560), (194, 2052280), (388, 1026140), (485, 820912), (776, 513070), (970, 410456), (1552, 256535), (1940, 205228), (3880, 102614), (7760, 51307)]