81116840

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{211}}^1\times {\mathrm{1373}}^1$

素因数の和:1602

約数の個数: 64

約数和(自身を含む): 209727360

約数和(自身を除く): 128610520

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 211, 280, 422, 844, 1055, 1373, 1477, 1688, 2110, 2746, 2954, 4220, 5492, 5908, 6865, 7385, 8440, 9611, 10984, 11816, 13730, 14770, 19222, 27460, 29540, 38444, 48055, 54920, 59080, 76888, 96110, 192220, 289703, 384440, 579406, 1158812, 1448515, 2027921, 2317624, 2897030, 4055842, 5794060, 8111684, 10139605, 11588120, 16223368, 20279210, 40558420, 81116840]

約数ペア:

[(1, 81116840), (2, 40558420), (4, 20279210), (5, 16223368), (7, 11588120), (8, 10139605), (10, 8111684), (14, 5794060), (20, 4055842), (28, 2897030), (35, 2317624), (40, 2027921), (56, 1448515), (70, 1158812), (140, 579406), (211, 384440), (280, 289703), (422, 192220), (844, 96110), (1055, 76888), (1373, 59080), (1477, 54920), (1688, 48055), (2110, 38444), (2746, 29540), (2954, 27460), (4220, 19222), (5492, 14770), (5908, 13730), (6865, 11816), (7385, 10984), (8440, 9611)]