640404926

素因数分解:

$2^1\times 7^1\times {\mathrm{17}}^2\times {\mathrm{83}}^1\times {\mathrm{1907}}^1$

素因数の和:2033

約数の個数: 48

約数和(自身を含む): 1180884096

約数和(自身を除く): 540479170

約数列:

[1, 2, 7, 14, 17, 34, 83, 119, 166, 238, 289, 578, 581, 1162, 1411, 1907, 2023, 2822, 3814, 4046, 9877, 13349, 19754, 23987, 26698, 32419, 47974, 64838, 158281, 167909, 226933, 316562, 335818, 453866, 551123, 1102246, 1107967, 2215934, 2690777, 3857861, 5381554, 7715722, 18835439, 37670878, 45743209, 91486418, 320202463, 640404926]

約数ペア:

[(1, 640404926), (2, 320202463), (7, 91486418), (14, 45743209), (17, 37670878), (34, 18835439), (83, 7715722), (119, 5381554), (166, 3857861), (238, 2690777), (289, 2215934), (578, 1107967), (581, 1102246), (1162, 551123), (1411, 453866), (1907, 335818), (2023, 316562), (2822, 226933), (3814, 167909), (4046, 158281), (9877, 64838), (13349, 47974), (19754, 32419), (23987, 26698)]