20171421725

素因数分解:

$5^2\times 7^1\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{35897}}^1$

素因数の和:35959

約数の個数: 72

約数和(自身を含む): 32583896640

約数和(自身を除く): 12412474915

約数列:

[1, 5, 7, 13, 19, 25, 35, 65, 91, 95, 133, 169, 175, 247, 325, 455, 475, 665, 845, 1183, 1235, 1729, 2275, 3211, 3325, 4225, 5915, 6175, 8645, 16055, 22477, 29575, 35897, 43225, 80275, 112385, 179485, 251279, 466661, 561925, 682043, 897425, 1256395, 2333305, 3266627, 3410215, 4774301, 6066593, 6281975, 8866559, 11666525, 16333135, 17051075, 23871505, 30332965, 42466151, 44332795, 62065913, 81665675, 115265267, 119357525, 151664825, 212330755, 221663975, 310329565, 576326335, 806856869, 1061653775, 1551647825, 2881631675, 4034284345, 20171421725]

約数ペア:

[(1, 20171421725), (5, 4034284345), (7, 2881631675), (13, 1551647825), (19, 1061653775), (25, 806856869), (35, 576326335), (65, 310329565), (91, 221663975), (95, 212330755), (133, 151664825), (169, 119357525), (175, 115265267), (247, 81665675), (325, 62065913), (455, 44332795), (475, 42466151), (665, 30332965), (845, 23871505), (1183, 17051075), (1235, 16333135), (1729, 11666525), (2275, 8866559), (3211, 6281975), (3325, 6066593), (4225, 4774301), (5915, 3410215), (6175, 3266627), (8645, 2333305), (16055, 1256395), (22477, 897425), (29575, 682043), (35897, 561925), (43225, 466661), (80275, 251279), (112385, 179485)]