21117040

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{5387}}^1$

素因数の和:5414

約数の個数: 60

約数和(自身を含む): 57123576

約数和(自身を除く): 36006536

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 49, 56, 70, 80, 98, 112, 140, 196, 245, 280, 392, 490, 560, 784, 980, 1960, 3920, 5387, 10774, 21548, 26935, 37709, 43096, 53870, 75418, 86192, 107740, 150836, 188545, 215480, 263963, 301672, 377090, 430960, 527926, 603344, 754180, 1055852, 1319815, 1508360, 2111704, 2639630, 3016720, 4223408, 5279260, 10558520, 21117040]

約数ペア:

[(1, 21117040), (2, 10558520), (4, 5279260), (5, 4223408), (7, 3016720), (8, 2639630), (10, 2111704), (14, 1508360), (16, 1319815), (20, 1055852), (28, 754180), (35, 603344), (40, 527926), (49, 430960), (56, 377090), (70, 301672), (80, 263963), (98, 215480), (112, 188545), (140, 150836), (196, 107740), (245, 86192), (280, 75418), (392, 53870), (490, 43096), (560, 37709), (784, 26935), (980, 21548), (1960, 10774), (3920, 5387)]