1916407720

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{785413}}^1$

素因数の和:785485

約数の個数: 32

約数和(自身を含む): 4382610120

約数和(自身を除く): 2466202400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 244, 305, 488, 610, 1220, 2440, 785413, 1570826, 3141652, 3927065, 6283304, 7854130, 15708260, 31416520, 47910193, 95820386, 191640772, 239550965, 383281544, 479101930, 958203860, 1916407720]

約数ペア:

[(1, 1916407720), (2, 958203860), (4, 479101930), (5, 383281544), (8, 239550965), (10, 191640772), (20, 95820386), (40, 47910193), (61, 31416520), (122, 15708260), (244, 7854130), (305, 6283304), (488, 3927065), (610, 3141652), (1220, 1570826), (2440, 785413)]