668996840

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{880259}}^1$

素因数の和:880289

約数の個数: 32

約数和(自身を含む): 1584468000

約数和(自身を除く): 915471160

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 380, 760, 880259, 1760518, 3521036, 4401295, 7042072, 8802590, 16724921, 17605180, 33449842, 35210360, 66899684, 83624605, 133799368, 167249210, 334498420, 668996840]

約数ペア:

[(1, 668996840), (2, 334498420), (4, 167249210), (5, 133799368), (8, 83624605), (10, 66899684), (19, 35210360), (20, 33449842), (38, 17605180), (40, 16724921), (76, 8802590), (95, 7042072), (152, 4401295), (190, 3521036), (380, 1760518), (760, 880259)]