19517925

素因数分解:

$3^1\times 5^2\times 7^2\times {\mathrm{47}}^1\times {\mathrm{113}}^1$

素因数の和:187

約数の個数: 72

約数和(自身を含む): 38676096

約数和(自身を除く): 19158171

約数列:

[1, 3, 5, 7, 15, 21, 25, 35, 47, 49, 75, 105, 113, 141, 147, 175, 235, 245, 329, 339, 525, 565, 705, 735, 791, 987, 1175, 1225, 1645, 1695, 2303, 2373, 2825, 3525, 3675, 3955, 4935, 5311, 5537, 6909, 8225, 8475, 11515, 11865, 15933, 16611, 19775, 24675, 26555, 27685, 34545, 37177, 57575, 59325, 79665, 83055, 111531, 132775, 138425, 172725, 185885, 260239, 398325, 415275, 557655, 780717, 929425, 1301195, 2788275, 3903585, 6505975, 19517925]

約数ペア:

[(1, 19517925), (3, 6505975), (5, 3903585), (7, 2788275), (15, 1301195), (21, 929425), (25, 780717), (35, 557655), (47, 415275), (49, 398325), (75, 260239), (105, 185885), (113, 172725), (141, 138425), (147, 132775), (175, 111531), (235, 83055), (245, 79665), (329, 59325), (339, 57575), (525, 37177), (565, 34545), (705, 27685), (735, 26555), (791, 24675), (987, 19775), (1175, 16611), (1225, 15933), (1645, 11865), (1695, 11515), (2303, 8475), (2373, 8225), (2825, 6909), (3525, 5537), (3675, 5311), (3955, 4935)]