28807660

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{149}}^1\times {\mathrm{1381}}^1$

素因数の和:1546

約数の個数: 48

約数和(自身を含む): 69652800

約数和(自身を除く): 40845140

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 149, 298, 596, 745, 1043, 1381, 1490, 2086, 2762, 2980, 4172, 5215, 5524, 6905, 9667, 10430, 13810, 19334, 20860, 27620, 38668, 48335, 96670, 193340, 205769, 411538, 823076, 1028845, 1440383, 2057690, 2880766, 4115380, 5761532, 7201915, 14403830, 28807660]

約数ペア:

[(1, 28807660), (2, 14403830), (4, 7201915), (5, 5761532), (7, 4115380), (10, 2880766), (14, 2057690), (20, 1440383), (28, 1028845), (35, 823076), (70, 411538), (140, 205769), (149, 193340), (298, 96670), (596, 48335), (745, 38668), (1043, 27620), (1381, 20860), (1490, 19334), (2086, 13810), (2762, 10430), (2980, 9667), (4172, 6905), (5215, 5524)]