20139920675

素因数分解:

$5^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{389}}^1\times {\mathrm{677}}^1$

素因数の和:1125

約数の個数: 96

約数和(自身を含む): 31476556800

約数和(自身を除く): 11336636125

約数列:

[1, 5, 7, 19, 23, 25, 35, 95, 115, 133, 161, 175, 389, 437, 475, 575, 665, 677, 805, 1945, 2185, 2723, 3059, 3325, 3385, 4025, 4739, 7391, 8947, 9725, 10925, 12863, 13615, 15295, 15571, 16925, 23695, 36955, 44735, 51737, 62629, 64315, 68075, 76475, 77855, 90041, 108997, 118475, 169993, 184775, 223675, 258685, 263353, 295849, 313145, 321575, 389275, 450205, 544985, 849965, 1189951, 1293425, 1316765, 1479245, 1565725, 1843471, 2070943, 2251025, 2724925, 4249825, 5003707, 5949755, 6057119, 6583825, 7396225, 9217355, 10354715, 25018535, 29748775, 30285595, 35025949, 42399833, 46086775, 51773575, 115085261, 125092675, 151427975, 175129745, 211999165, 575426305, 805596827, 875648725, 1059995825, 2877131525, 4027984135, 20139920675]

約数ペア:

[(1, 20139920675), (5, 4027984135), (7, 2877131525), (19, 1059995825), (23, 875648725), (25, 805596827), (35, 575426305), (95, 211999165), (115, 175129745), (133, 151427975), (161, 125092675), (175, 115085261), (389, 51773575), (437, 46086775), (475, 42399833), (575, 35025949), (665, 30285595), (677, 29748775), (805, 25018535), (1945, 10354715), (2185, 9217355), (2723, 7396225), (3059, 6583825), (3325, 6057119), (3385, 5949755), (4025, 5003707), (4739, 4249825), (7391, 2724925), (8947, 2251025), (9725, 2070943), (10925, 1843471), (12863, 1565725), (13615, 1479245), (15295, 1316765), (15571, 1293425), (16925, 1189951), (23695, 849965), (36955, 544985), (44735, 450205), (51737, 389275), (62629, 321575), (64315, 313145), (68075, 295849), (76475, 263353), (77855, 258685), (90041, 223675), (108997, 184775), (118475, 169993)]