209494925

素因数分解:

$5^2\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{229}}^1$

素因数の和:342

約数の個数: 48

約数和(自身を含む): 286112640

約数和(自身を除く): 76617715

約数列:

[1, 5, 23, 25, 37, 43, 115, 185, 215, 229, 575, 851, 925, 989, 1075, 1145, 1591, 4255, 4945, 5267, 5725, 7955, 8473, 9847, 21275, 24725, 26335, 36593, 39775, 42365, 49235, 131675, 182965, 194879, 211825, 226481, 246175, 364339, 914825, 974395, 1132405, 1821695, 4871975, 5662025, 8379797, 9108475, 41898985, 209494925]

約数ペア:

[(1, 209494925), (5, 41898985), (23, 9108475), (25, 8379797), (37, 5662025), (43, 4871975), (115, 1821695), (185, 1132405), (215, 974395), (229, 914825), (575, 364339), (851, 246175), (925, 226481), (989, 211825), (1075, 194879), (1145, 182965), (1591, 131675), (4255, 49235), (4945, 42365), (5267, 39775), (5725, 36593), (7955, 26335), (8473, 24725), (9847, 21275)]