149745820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{521}}^1\times {\mathrm{2053}}^1$

素因数の和:2590

約数の個数: 48

約数和(自身を含む): 360255168

約数和(自身を除く): 210509348

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 521, 1042, 2053, 2084, 2605, 3647, 4106, 5210, 7294, 8212, 10265, 10420, 14371, 14588, 18235, 20530, 28742, 36470, 41060, 57484, 71855, 72940, 143710, 287420, 1069613, 2139226, 4278452, 5348065, 7487291, 10696130, 14974582, 21392260, 29949164, 37436455, 74872910, 149745820]

約数ペア:

[(1, 149745820), (2, 74872910), (4, 37436455), (5, 29949164), (7, 21392260), (10, 14974582), (14, 10696130), (20, 7487291), (28, 5348065), (35, 4278452), (70, 2139226), (140, 1069613), (521, 287420), (1042, 143710), (2053, 72940), (2084, 71855), (2605, 57484), (3647, 41060), (4106, 36470), (5210, 28742), (7294, 20530), (8212, 18235), (10265, 14588), (10420, 14371)]