18998770

素因数分解:

$2^1\times 5^1\times 7^3\times {\mathrm{29}}^1\times {\mathrm{191}}^1$

素因数の和:248

約数の個数: 64

約数和(自身を含む): 41472000

約数和(自身を除く): 22473230

約数列:

[1, 2, 5, 7, 10, 14, 29, 35, 49, 58, 70, 98, 145, 191, 203, 245, 290, 343, 382, 406, 490, 686, 955, 1015, 1337, 1421, 1715, 1910, 2030, 2674, 2842, 3430, 5539, 6685, 7105, 9359, 9947, 11078, 13370, 14210, 18718, 19894, 27695, 38773, 46795, 49735, 55390, 65513, 77546, 93590, 99470, 131026, 193865, 271411, 327565, 387730, 542822, 655130, 1357055, 1899877, 2714110, 3799754, 9499385, 18998770]

約数ペア:

[(1, 18998770), (2, 9499385), (5, 3799754), (7, 2714110), (10, 1899877), (14, 1357055), (29, 655130), (35, 542822), (49, 387730), (58, 327565), (70, 271411), (98, 193865), (145, 131026), (191, 99470), (203, 93590), (245, 77546), (290, 65513), (343, 55390), (382, 49735), (406, 46795), (490, 38773), (686, 27695), (955, 19894), (1015, 18718), (1337, 14210), (1421, 13370), (1715, 11078), (1910, 9947), (2030, 9359), (2674, 7105), (2842, 6685), (3430, 5539)]