842140

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{79}}^1$

素因数の和:142

約数の個数: 48

約数和(自身を含む): 1975680

約数和(自身を除く): 1133540

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 41, 52, 65, 79, 82, 130, 158, 164, 205, 260, 316, 395, 410, 533, 790, 820, 1027, 1066, 1580, 2054, 2132, 2665, 3239, 4108, 5135, 5330, 6478, 10270, 10660, 12956, 16195, 20540, 32390, 42107, 64780, 84214, 168428, 210535, 421070, 842140]

約数ペア:

[(1, 842140), (2, 421070), (4, 210535), (5, 168428), (10, 84214), (13, 64780), (20, 42107), (26, 32390), (41, 20540), (52, 16195), (65, 12956), (79, 10660), (82, 10270), (130, 6478), (158, 5330), (164, 5135), (205, 4108), (260, 3239), (316, 2665), (395, 2132), (410, 2054), (533, 1580), (790, 1066), (820, 1027)]