21365890

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{443}}^1$

素因数の和:523

約数の個数: 64

約数和(自身を含む): 48335616

約数和(自身を除く): 26969726

約数列:

[1, 2, 5, 7, 10, 13, 14, 26, 35, 53, 65, 70, 91, 106, 130, 182, 265, 371, 443, 455, 530, 689, 742, 886, 910, 1378, 1855, 2215, 3101, 3445, 3710, 4430, 4823, 5759, 6202, 6890, 9646, 11518, 15505, 23479, 24115, 28795, 31010, 40313, 46958, 48230, 57590, 80626, 117395, 164353, 201565, 234790, 305227, 328706, 403130, 610454, 821765, 1526135, 1643530, 2136589, 3052270, 4273178, 10682945, 21365890]

約数ペア:

[(1, 21365890), (2, 10682945), (5, 4273178), (7, 3052270), (10, 2136589), (13, 1643530), (14, 1526135), (26, 821765), (35, 610454), (53, 403130), (65, 328706), (70, 305227), (91, 234790), (106, 201565), (130, 164353), (182, 117395), (265, 80626), (371, 57590), (443, 48230), (455, 46958), (530, 40313), (689, 31010), (742, 28795), (886, 24115), (910, 23479), (1378, 15505), (1855, 11518), (2215, 9646), (3101, 6890), (3445, 6202), (3710, 5759), (4430, 4823)]