8213320

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{101}}^1\times {\mathrm{107}}^1$

素因数の和:238

約数の個数: 64

約数和(自身を含む): 19828800

約数和(自身を除く): 11615480

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 101, 107, 152, 190, 202, 214, 380, 404, 428, 505, 535, 760, 808, 856, 1010, 1070, 1919, 2020, 2033, 2140, 3838, 4040, 4066, 4280, 7676, 8132, 9595, 10165, 10807, 15352, 16264, 19190, 20330, 21614, 38380, 40660, 43228, 54035, 76760, 81320, 86456, 108070, 205333, 216140, 410666, 432280, 821332, 1026665, 1642664, 2053330, 4106660, 8213320]

約数ペア:

[(1, 8213320), (2, 4106660), (4, 2053330), (5, 1642664), (8, 1026665), (10, 821332), (19, 432280), (20, 410666), (38, 216140), (40, 205333), (76, 108070), (95, 86456), (101, 81320), (107, 76760), (152, 54035), (190, 43228), (202, 40660), (214, 38380), (380, 21614), (404, 20330), (428, 19190), (505, 16264), (535, 15352), (760, 10807), (808, 10165), (856, 9595), (1010, 8132), (1070, 7676), (1919, 4280), (2020, 4066), (2033, 4040), (2140, 3838)]