1230820

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{79}}^1$

素因数の和:148

約数の個数: 48

約数和(自身を含む): 2822400

約数和(自身を除く): 1591580

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 41, 76, 79, 82, 95, 158, 164, 190, 205, 316, 380, 395, 410, 779, 790, 820, 1501, 1558, 1580, 3002, 3116, 3239, 3895, 6004, 6478, 7505, 7790, 12956, 15010, 15580, 16195, 30020, 32390, 61541, 64780, 123082, 246164, 307705, 615410, 1230820]

約数ペア:

[(1, 1230820), (2, 615410), (4, 307705), (5, 246164), (10, 123082), (19, 64780), (20, 61541), (38, 32390), (41, 30020), (76, 16195), (79, 15580), (82, 15010), (95, 12956), (158, 7790), (164, 7505), (190, 6478), (205, 6004), (316, 3895), (380, 3239), (395, 3116), (410, 3002), (779, 1580), (790, 1558), (820, 1501)]