19908870

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{103}}^1\times {\mathrm{379}}^1$

素因数の和:509

約数の個数: 64

約数和(自身を含む): 51217920

約数和(自身を除く): 31309050

約数列:

[1, 2, 3, 5, 6, 10, 15, 17, 30, 34, 51, 85, 102, 103, 170, 206, 255, 309, 379, 510, 515, 618, 758, 1030, 1137, 1545, 1751, 1895, 2274, 3090, 3502, 3790, 5253, 5685, 6443, 8755, 10506, 11370, 12886, 17510, 19329, 26265, 32215, 38658, 39037, 52530, 64430, 78074, 96645, 117111, 193290, 195185, 234222, 390370, 585555, 663629, 1171110, 1327258, 1990887, 3318145, 3981774, 6636290, 9954435, 19908870]

約数ペア:

[(1, 19908870), (2, 9954435), (3, 6636290), (5, 3981774), (6, 3318145), (10, 1990887), (15, 1327258), (17, 1171110), (30, 663629), (34, 585555), (51, 390370), (85, 234222), (102, 195185), (103, 193290), (170, 117111), (206, 96645), (255, 78074), (309, 64430), (379, 52530), (510, 39037), (515, 38658), (618, 32215), (758, 26265), (1030, 19329), (1137, 17510), (1545, 12886), (1751, 11370), (1895, 10506), (2274, 8755), (3090, 6443), (3502, 5685), (3790, 5253)]