18947320

素因数分解:

$2^3\times 5^1\times 7^3\times {\mathrm{1381}}^1$

素因数の和:1413

約数の個数: 64

約数和(自身を含む): 49752000

約数和(自身を除く): 30804680

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 98, 140, 196, 245, 280, 343, 392, 490, 686, 980, 1372, 1381, 1715, 1960, 2744, 2762, 3430, 5524, 6860, 6905, 9667, 11048, 13720, 13810, 19334, 27620, 38668, 48335, 55240, 67669, 77336, 96670, 135338, 193340, 270676, 338345, 386680, 473683, 541352, 676690, 947366, 1353380, 1894732, 2368415, 2706760, 3789464, 4736830, 9473660, 18947320]

約数ペア:

[(1, 18947320), (2, 9473660), (4, 4736830), (5, 3789464), (7, 2706760), (8, 2368415), (10, 1894732), (14, 1353380), (20, 947366), (28, 676690), (35, 541352), (40, 473683), (49, 386680), (56, 338345), (70, 270676), (98, 193340), (140, 135338), (196, 96670), (245, 77336), (280, 67669), (343, 55240), (392, 48335), (490, 38668), (686, 27620), (980, 19334), (1372, 13810), (1381, 13720), (1715, 11048), (1960, 9667), (2744, 6905), (2762, 6860), (3430, 5524)]