21521640385

素因数分解:

$5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{457}}^1\times {\mathrm{3079}}^1$

素因数の和:3590

約数の個数: 64

約数和(自身を含む): 32501145600

約数和(自身を除く): 10979505215

約数列:

[1, 5, 7, 19, 23, 35, 95, 115, 133, 161, 437, 457, 665, 805, 2185, 2285, 3059, 3079, 3199, 8683, 10511, 15295, 15395, 15995, 21553, 43415, 52555, 58501, 60781, 70817, 73577, 107765, 199709, 292505, 303905, 354085, 367885, 409507, 495719, 998545, 1345523, 1397963, 1407103, 2047535, 2478595, 6727615, 6989815, 7035515, 9418661, 9849721, 26734957, 32363369, 47093305, 49248605, 133674785, 161816845, 187144699, 226543583, 614904011, 935723495, 1132717915, 3074520055, 4304328077, 21521640385]

約数ペア:

[(1, 21521640385), (5, 4304328077), (7, 3074520055), (19, 1132717915), (23, 935723495), (35, 614904011), (95, 226543583), (115, 187144699), (133, 161816845), (161, 133674785), (437, 49248605), (457, 47093305), (665, 32363369), (805, 26734957), (2185, 9849721), (2285, 9418661), (3059, 7035515), (3079, 6989815), (3199, 6727615), (8683, 2478595), (10511, 2047535), (15295, 1407103), (15395, 1397963), (15995, 1345523), (21553, 998545), (43415, 495719), (52555, 409507), (58501, 367885), (60781, 354085), (70817, 303905), (73577, 292505), (107765, 199709)]